New thread relevantly named to my 5-year build plans. Getting a start on this early because there are a lot of planned refits, from simple armament refreshes to (possibly) some more major rebuilds, which will take time to effort out costs and such. Currently the plan looks like this, with the general idea of what Im looking for with that class.
--Three Fast Battleships. These are basically going to be improved Empress Amelia's.
--Two Armored Cruisers. Something more along the lines of "smol fast battleship" than the "overspecialized counter-raiders" which came before given the Fast Battleships exist.
--Two Aviation Ships. These will ether be minor improvements on the first flattop I'm planning to start in 1924, or something in the vein of Tone. Maybe one of each.
--Five Cruisers. Current plans look like somethign smaller than the current GPC-21 class.
--Ten Heavy Destroyers. Expect an update to the HFD-21 class
--Twenty General Destroyers. Expect an update to the GFD-21 class. These will allow for the phase out of more pre-Caicos destroyers to other duties or the scapyard.
--One "Experimental" ship, which I think may turn into my first underway oiler
--Ten 750t Subs (best avalible table type)
--150 Light Torpedo Craft(best available table 40t MTB type). This should complete the refresh of the Light Torpedo forces.
--Fourteen Auxiliaries. Thinking an updated Custodi design.
The AC is all I have been playing with so far. Intended more for general use duties rather than explicit counter-raider work, the design uses some new AA guns which are slated to begin development in 1924
QuoteAC-26, Imperial Roman Armored Cruiser laid down 1926
Displacement:
16,000 t light; 16,667 t standard; 18,002 t normal; 19,070 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(639.77 ft / 626.64 ft) x 75.46 ft x (22.97 / 24.07 ft)
(195.00 m / 191.00 m) x 23.00 m x (7.00 / 7.34 m)
Armament:
8 - 9.25" / 235 mm 45.0 cal guns - 396.83lbs / 180.00kg shells, 125 per gun
Breech loading guns in turret on barbette mounts, 1919 Model
4 x 2-gun mounts on centreline ends, evenly spread
2 raised mounts - superfiring
6 - 5.51" / 140 mm 55.0 cal guns - 83.78lbs / 38.00kg shells, 175 per gun
Quick firing guns in deck and hoist mounts, 1909 Model
6 x Single mounts on sides, evenly spread
2 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
2 x Single mounts on sides, aft deck forward
2 raised mounts
6 - 2.24" / 57.0 mm 55.0 cal guns - 6.06lbs / 2.75kg shells, 750 per gun
Anti-air guns in deck mounts, 1926 Model
6 x Single mounts on sides, evenly spread
6 raised mounts
8 - 1.10" / 28.0 mm 55.0 cal guns - 0.73lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck mounts, 1926 Model
2 x Quad mounts on sides, forward deck centre
2 raised mounts
Weight of broadside 3,761 lbs / 1,706 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.30" / 160 mm 407.32 ft / 124.15 m 18.04 ft / 5.50 m
Ends: 1.97" / 50 mm 219.29 ft / 66.84 m 10.43 ft / 3.18 m
Main Belt covers 100 % of normal length
- Torpedo Bulkhead - Additional damage containing bulkheads:
0.79" / 20 mm 407.32 ft / 124.15 m 24.61 ft / 7.50 m
Beam between torpedo bulkheads 60.70 ft / 18.50 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.25" / 235 mm 3.94" / 100 mm 7.48" / 190 mm
2nd: 1.97" / 50 mm 0.59" / 15 mm 1.97" / 50 mm
3rd: 0.20" / 5 mm - 0.59" / 15 mm
4th: 0.20" / 5 mm - -
- Armoured deck - multiple decks:
For and Aft decks: 2.95" / 75 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 100,000 shp / 74,600 Kw = 30.19 kts
Range 8,000nm at 14.00 kts
Bunker at max displacement = 2,404 tons
Complement:
776 - 1,010
Cost:
£4.761 million / $19.042 million
Distribution of weights at normal displacement:
Armament: 1,093 tons, 6.1 %
- Guns: 1,093 tons, 6.1 %
Armour: 5,181 tons, 28.8 %
- Belts: 2,116 tons, 11.8 %
- Torpedo bulkhead: 292 tons, 1.6 %
- Armament: 944 tons, 5.2 %
- Armour Deck: 1,684 tons, 9.4 %
- Conning Tower: 146 tons, 0.8 %
Machinery: 3,201 tons, 17.8 %
Hull, fittings & equipment: 5,875 tons, 32.6 %
Fuel, ammunition & stores: 2,002 tons, 11.1 %
Miscellaneous weights: 650 tons, 3.6 %
- Hull below water: 200 tons
- Hull above water: 200 tons
- On freeboard deck: 200 tons
- Above deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
25,839 lbs / 11,720 Kg = 65.3 x 9.3 " / 235 mm shells or 3.6 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 4.3 ft / 1.3 m
Roll period: 15.3 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.45
Seaboat quality (Average = 1.00): 1.03
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.580 / 0.586
Length to Beam Ratio: 8.30 : 1
'Natural speed' for length: 25.03 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.87 ft / 1.18 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 25.43 ft / 7.75 m, 25.43 ft / 7.75 m
- Forward deck: 35.00 %, 25.43 ft / 7.75 m, 24.61 ft / 7.50 m
- Aft deck: 30.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Quarter deck: 15.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Average freeboard: 21.22 ft / 6.47 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 99.1 %
- Above water (accommodation/working, high = better): 175.3 %
Waterplane Area: 33,947 Square feet or 3,154 Square metres
Displacement factor (Displacement / loading): 114 %
Structure weight / hull surface area: 130 lbs/sq ft or 635 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.25
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Quote from: snip on October 24, 2022, 12:40:42 AM
New thread relevantly named to my 5-year build plans. Getting a start on this early because there are a lot of planned refits, from simple armament refreshes to (possibly) some more major rebuilds, which will take time to effort out costs and such. Currently the plan looks like this, with the general idea of what Im looking for with that class.
Yikes.
I have a slew of '1924' ships, but no real build plan anymore.
Every time I try to make one, it rapidly becomes ...off...as I discover new priorities.
:)
On the AC, I think it's a little light, but I'm not sure who the OPFOR is. Makes it hard to evaluate.
I've got similar vessels- either the older/slower Asbaras, or the new Zemakas,
while the Aztec have similar vessels in the Razee classes, the Norse Selkirk is similar and presumably will see successors.
In terms of details, the 20mm TDS has a 4.5 depth, that's 2.25/side for a very light bulkhead.
Should be good vs a mine, or a 1915 AC's 14" aerial torpedo, but I'd be surprised if it held under a decent torpedo.
The 1906 "test 1" caisson had a 4m depth and 20mm and was successful vs 180lbs of Guncotton about the same as 100lbs of TNT.
That's nearly twice the width vs. a basically 18" torp.
Have to admit I was expecting quads for the main battery.
Byzantium also has somewhat slower ACs.
Roman preferred to build BCs or very fast cruisers.
Building medium cruisers allows for more.
How many planned in the PLAN ?
Quote from: Jefgte on October 25, 2022, 04:02:29 PM
Byzantium also has somewhat slower ACs.
Roman preferred to build BCs or very fast cruisers.
Building medium cruisers allows for more.
How many planned in the PLAN ?
Two planned.
Quote from: The Rock Doctor on October 25, 2022, 06:52:09 AM
Have to admit I was expecting quads for the main battery.
As much as it pains me, quad 235s just require a bigger ship than I can make a pair of.
Quote from: Kaiser Kirk on October 24, 2022, 09:05:21 PM
Quote from: snip on October 24, 2022, 12:40:42 AM
New thread relevantly named to my 5-year build plans. Getting a start on this early because there are a lot of planned refits, from simple armament refreshes to (possibly) some more major rebuilds, which will take time to effort out costs and such. Currently the plan looks like this, with the general idea of what Im looking for with that class.
Yikes.
I have a slew of '1924' ships, but no real build plan anymore.
Every time I try to make one, it rapidly becomes ...off...as I discover new priorities.
:)
On the AC, I think it's a little light, but I'm not sure who the OPFOR is. Makes it hard to evaluate.
I've got similar vessels- either the older/slower Asbaras, or the new Zemakas,
while the Aztec have similar vessels in the Razee classes, the Norse Selkirk is similar and presumably will see successors.
In terms of details, the 20mm TDS has a 4.5 depth, that's 2.25/side for a very light bulkhead.
Should be good vs a mine, or a 1915 AC's 14" aerial torpedo, but I'd be surprised if it held under a decent torpedo.
The 1906 "test 1" caisson had a 4m depth and 20mm and was successful vs 180lbs of Guncotton about the same as 100lbs of TNT.
That's nearly twice the width vs. a basically 18" torp.
I can most likely add 1000t without radical alterations to the build plan, will fiddle and see what that gets me.
What 1000t buys me:
--A little more buffer on the 30knt minimum (keeping 100k shp only got me to 29.8, so need 110k for even numbers)
--Double the TDS thickness (with .1m less distance overall to keep the engines within the citadel)
--5mm more thickness on the belt
--A 10 degree incline on the belt
QuoteAC-26B, Imperial Roman Armored Cruiser laid down 1926
Displacement:
17,000 t light; 17,688 t standard; 19,077 t normal; 20,189 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(639.77 ft / 626.64 ft) x 75.46 ft x (22.97 / 24.08 ft)
(195.00 m / 191.00 m) x 23.00 m x (7.00 / 7.34 m)
Armament:
8 - 9.25" / 235 mm 45.0 cal guns - 396.83lbs / 180.00kg shells, 125 per gun
Breech loading guns in turret on barbette mounts, 1919 Model
4 x 2-gun mounts on centreline ends, evenly spread
2 raised mounts - superfiring
6 - 5.51" / 140 mm 55.0 cal guns - 83.78lbs / 38.00kg shells, 175 per gun
Quick firing guns in deck and hoist mounts, 1909 Model
6 x Single mounts on sides, evenly spread
2 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
2 x Single mounts on sides, aft deck forward
2 raised mounts
6 - 2.24" / 57.0 mm 55.0 cal guns - 6.06lbs / 2.75kg shells, 750 per gun
Anti-air guns in deck mounts, 1926 Model
6 x Single mounts on sides, evenly spread
6 raised mounts
8 - 1.10" / 28.0 mm 55.0 cal guns - 0.73lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck mounts, 1926 Model
2 x Quad mounts on sides, forward deck centre
2 raised mounts
Weight of broadside 3,761 lbs / 1,706 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.50" / 165 mm 407.32 ft / 124.15 m 18.32 ft / 5.59 m
Ends: 1.97" / 50 mm 219.29 ft / 66.84 m 10.43 ft / 3.18 m
Main Belt covers 100 % of normal length
Main Belt inclined 10.00 degrees (positive = in)
- Torpedo Bulkhead - Additional damage containing bulkheads:
1.57" / 40 mm 407.32 ft / 124.15 m 24.61 ft / 7.50 m
Beam between torpedo bulkheads 61.02 ft / 18.60 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.25" / 235 mm 3.94" / 100 mm 7.48" / 190 mm
2nd: 1.97" / 50 mm 0.59" / 15 mm 1.97" / 50 mm
3rd: 0.20" / 5 mm - 0.59" / 15 mm
4th: 0.20" / 5 mm - -
- Armoured deck - multiple decks:
For and Aft decks: 2.95" / 75 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 110,000 shp / 82,060 Kw = 30.51 kts
Range 8,000nm at 14.00 kts
Bunker at max displacement = 2,501 tons
Complement:
811 - 1,055
Cost:
£5.036 million / $20.145 million
Distribution of weights at normal displacement:
Armament: 1,093 tons, 5.7 %
- Guns: 1,093 tons, 5.7 %
Armour: 5,632 tons, 29.5 %
- Belts: 2,214 tons, 11.6 %
- Torpedo bulkhead: 584 tons, 3.1 %
- Armament: 944 tons, 4.9 %
- Armour Deck: 1,739 tons, 9.1 %
- Conning Tower: 151 tons, 0.8 %
Machinery: 3,521 tons, 18.5 %
Hull, fittings & equipment: 6,104 tons, 32.0 %
Fuel, ammunition & stores: 2,077 tons, 10.9 %
Miscellaneous weights: 650 tons, 3.4 %
- Hull below water: 200 tons
- Hull above water: 200 tons
- On freeboard deck: 200 tons
- Above deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
27,623 lbs / 12,530 Kg = 69.8 x 9.3 " / 235 mm shells or 3.9 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 4.3 ft / 1.3 m
Roll period: 15.2 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.46
Seaboat quality (Average = 1.00): 1.01
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.615 / 0.621
Length to Beam Ratio: 8.30 : 1
'Natural speed' for length: 25.03 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.87 ft / 1.18 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 25.43 ft / 7.75 m, 25.43 ft / 7.75 m
- Forward deck: 45.00 %, 25.43 ft / 7.75 m, 24.61 ft / 7.50 m
- Aft deck: 20.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Quarter deck: 15.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Average freeboard: 22.08 ft / 6.73 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 99.8 %
- Above water (accommodation/working, high = better): 184.2 %
Waterplane Area: 35,064 Square feet or 3,258 Square metres
Displacement factor (Displacement / loading): 113 %
Structure weight / hull surface area: 130 lbs/sq ft or 635 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.28
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Maybe take that 5mm extra belt thickness and use the weight to increase the bow height to get rid of that wet forward warning?
Can get there without any alterations to anything other than freeboard.
QuoteAC-26B, Imperial Roman Armored Cruiser laid down 1926
Displacement:
16,999 t light; 17,688 t standard; 19,077 t normal; 20,189 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(639.78 ft / 626.64 ft) x 75.46 ft x (22.97 / 24.08 ft)
(195.00 m / 191.00 m) x 23.00 m x (7.00 / 7.34 m)
Armament:
8 - 9.25" / 235 mm 45.0 cal guns - 396.83lbs / 180.00kg shells, 125 per gun
Breech loading guns in turret on barbette mounts, 1919 Model
4 x 2-gun mounts on centreline ends, evenly spread
2 raised mounts - superfiring
6 - 5.51" / 140 mm 55.0 cal guns - 83.78lbs / 38.00kg shells, 175 per gun
Quick firing guns in deck and hoist mounts, 1909 Model
6 x Single mounts on sides, evenly spread
2 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
2 x Single mounts on sides, aft deck forward
2 raised mounts
6 - 2.24" / 57.0 mm 55.0 cal guns - 6.06lbs / 2.75kg shells, 750 per gun
Anti-air guns in deck mounts, 1926 Model
6 x Single mounts on sides, evenly spread
6 raised mounts
8 - 1.10" / 28.0 mm 55.0 cal guns - 0.73lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck mounts, 1926 Model
2 x Quad mounts on sides, forward deck centre
2 raised mounts
Weight of broadside 3,761 lbs / 1,706 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.50" / 165 mm 407.32 ft / 124.15 m 18.32 ft / 5.59 m
Ends: 1.97" / 50 mm 219.29 ft / 66.84 m 10.43 ft / 3.18 m
Main Belt covers 100 % of normal length
Main Belt inclined 10.00 degrees (positive = in)
- Torpedo Bulkhead - Additional damage containing bulkheads:
1.57" / 40 mm 407.32 ft / 124.15 m 24.61 ft / 7.50 m
Beam between torpedo bulkheads 61.02 ft / 18.60 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.25" / 235 mm 3.94" / 100 mm 7.48" / 190 mm
2nd: 1.97" / 50 mm 0.59" / 15 mm 1.97" / 50 mm
3rd: 0.20" / 5 mm - 0.59" / 15 mm
4th: 0.20" / 5 mm - -
- Armoured deck - multiple decks:
For and Aft decks: 2.95" / 75 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 110,000 shp / 82,060 Kw = 30.51 kts
Range 8,000nm at 14.00 kts
Bunker at max displacement = 2,501 tons
Complement:
811 - 1,055
Cost:
£5.036 million / $20.145 million
Distribution of weights at normal displacement:
Armament: 1,093 tons, 5.7 %
- Guns: 1,093 tons, 5.7 %
Armour: 5,632 tons, 29.5 %
- Belts: 2,214 tons, 11.6 %
- Torpedo bulkhead: 584 tons, 3.1 %
- Armament: 944 tons, 4.9 %
- Armour Deck: 1,739 tons, 9.1 %
- Conning Tower: 151 tons, 0.8 %
Machinery: 3,521 tons, 18.5 %
Hull, fittings & equipment: 6,103 tons, 32.0 %
Fuel, ammunition & stores: 2,078 tons, 10.9 %
Miscellaneous weights: 650 tons, 3.4 %
- Hull below water: 200 tons
- Hull above water: 200 tons
- On freeboard deck: 200 tons
- Above deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
27,659 lbs / 12,546 Kg = 69.8 x 9.3 " / 235 mm shells or 3.9 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 4.4 ft / 1.3 m
Roll period: 15.2 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.46
Seaboat quality (Average = 1.00): 1.01
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.615 / 0.621
Length to Beam Ratio: 8.30 : 1
'Natural speed' for length: 25.03 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 2.99 ft / 0.91 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 27.89 ft / 8.50 m, 25.43 ft / 7.75 m
- Forward deck: 45.00 %, 25.43 ft / 7.75 m, 24.61 ft / 7.50 m
- Aft deck: 20.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Quarter deck: 15.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Average freeboard: 22.28 ft / 6.79 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 99.8 %
- Above water (accommodation/working, high = better): 184.2 %
Waterplane Area: 35,066 Square feet or 3,258 Square metres
Displacement factor (Displacement / loading): 113 %
Structure weight / hull surface area: 130 lbs/sq ft or 634 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.29
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Looking at a scout cruiser, but updated for the fact that planes are apparently quite good at finding ships now. Fundamentally this is just a stretched GPC-21 (which itself will be updated for the 1926 program) to give room for larger aviation facilities. This is intended to provide airborne scouting capabilities to the fleet, eventually augmented by catapult aircraft from other ships.
QuoteASC-26, Imperial Roman Aviation Scout Cruiser laid down 1926
Displacement:
11,100 t light; 11,550 t standard; 13,030 t normal; 14,214 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(639.76 ft / 623.35 ft) x 63.98 ft x (21.33 / 22.83 ft)
(195.00 m / 190.00 m) x 19.50 m x (6.50 / 6.96 m)
Armament:
8 - 7.09" / 180 mm 50.0 cal guns - 187.39lbs / 85.00kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1915 Model
4 x 2-gun mounts on centreline, forward evenly spread
1 raised mount
4 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 150 per gun
Breech loading guns in deck and hoist mounts, 1909 Model
2 x Twin mounts on sides, forward deck aft
4 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
2 x Single mounts on sides, forward deck aft
2 raised mounts
2 x Single mounts on sides, aft deck forward
2 double raised mounts
12 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
2 x Quad mounts on sides, forward deck aft
2 raised mounts
1 x Quad mount on centreline, forward deck aft
1 double raised mount
Weight of broadside 1,936 lbs / 878 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 425.98 ft / 129.84 m 16.40 ft / 5.00 m
Ends: Unarmoured
Main Belt covers 105 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.36" / 60 mm 1.18" / 30 mm 2.36" / 60 mm
2nd: 0.98" / 25 mm 0.59" / 15 mm 1.97" / 50 mm
3rd: 0.20" / 5 mm - 0.59" / 15 mm
4th: - - 0.59" / 15 mm
- Armoured deck - single deck:
For and Aft decks: 1.38" / 35 mm
Forecastle: 0.00" / 0 mm Quarter deck: 1.38" / 35 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 110,000 shp / 82,060 Kw = 32.81 kts
Range 11,000nm at 14.00 kts
Bunker at max displacement = 2,663 tons
Complement:
609 - 792
Cost:
£3.775 million / $15.101 million
Distribution of weights at normal displacement:
Armament: 601 tons, 4.6 %
- Guns: 601 tons, 4.6 %
Armour: 1,780 tons, 13.7 %
- Belts: 900 tons, 6.9 %
- Armament: 236 tons, 1.8 %
- Armour Deck: 644 tons, 4.9 %
Machinery: 3,521 tons, 27.0 %
Hull, fittings & equipment: 4,588 tons, 35.2 %
Fuel, ammunition & stores: 1,930 tons, 14.8 %
Miscellaneous weights: 610 tons, 4.7 %
- Hull below water: 100 tons
- Hull above water: 150 tons
- On freeboard deck: 335 tons
- Above deck: 25 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
15,589 lbs / 7,071 Kg = 87.6 x 7.1 " / 180 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 3.7 ft / 1.1 m
Roll period: 13.9 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.40
Seaboat quality (Average = 1.00): 1.22
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.536 / 0.546
Length to Beam Ratio: 9.74 : 1
'Natural speed' for length: 24.97 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 41
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 27.07 ft / 8.25 m, 25.43 ft / 7.75 m
- Forward deck: 50.00 %, 25.43 ft / 7.75 m, 25.43 ft / 7.75 m
- Aft deck: 18.34 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Quarter deck: 11.66 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Average freeboard: 22.85 ft / 6.96 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 105.1 %
- Above water (accommodation/working, high = better): 197.7 %
Waterplane Area: 27,480 Square feet or 2,553 Square metres
Displacement factor (Displacement / loading): 114 %
Structure weight / hull surface area: 108 lbs/sq ft or 529 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.63
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Good seaboat, rides out heavy weather easily
Misc Weight Distribution
-Below Water (80t)
--30t Additional Pumps
--30t Additional Damage Control Equipment
--20t Additional Aviation consumable stores
--10t Improved Food & Drink storage
-Above Water (100t)
--30t Additional Damage Control Equipment
--20t Enhanced Ventilation and Crew Comfort
--50t Long Range Wireless (2x)
--50t Aviation Support Facilites (eg pilots ready room, hanger ventilation)
-On Deck (170t)
--50t 1918 Fire Control
--50t Reserved for Future Aviation Facilities (2x Recon Plane & 2x Catapults)
--32t 8x530mm (1913) Torpedo Tubes (2x4 mounts Aft Deck Forward)
--25t Enhanced Ventilation and Crew Comfort
--10t Short Range Wireless
--150t Six Armed Floatplanes
--15t 3x Catapults (one on each side aft deck, one on fantail)
--3t Construction Reserve
-Above Deck (25t)
--10t Additional Optical Spotting Equipment
--10t Night Fighting Equipment
--5t Improved Signaling Equipment
Question - on both the AC and the Cruiser, you have fairly shallow hulls.
Is there a storyline reason?
Now I tend to try for some ships under 7.5m, but others I keep to 9.5m
The storyline reasons are my Dutch navy in Wesworld where Soerabaja harbor was mostly 7.5m, and the OTL USN had
that depth as a limiter for a bit for operations off Mexico...So in my mind 7.5m becomes a proxy for 'shallow water' ports.
Which has little relevance to Navalism.
BUT...if there isn't a particular reason.... I think you could bring down hull resistance and increase hull girder depth by making them deeper,
dropping BC and saving weight. You'd probably boost seakeeping as well as the BC drops, and so be able to trim freeboard.
The big sticks for the 1926 Plan, an updated Empress Amelia. Major changes are a refresh of the AA battery to newer weapons, moving the 140mm secondaries to twin M&H from casemates, and thicker deck armor. A very minor increase to the TDS depth is also there.
QuoteLBS-26, Imperial Roman Republic Fast Battleship laid down 1926
Displacement:
46,074 t light; 48,395 t standard; 51,006 t normal; 53,095 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(869.41 ft / 853.02 ft) x 104.99 ft x (31.17 / 32.24 ft)
(265.00 m / 260.00 m) x 32.00 m x (9.50 / 9.83 m)
Armament:
8 - 16.14" / 410 mm 45.0 cal guns - 2,120.84lbs / 962.00kg shells, 110 per gun
Breech loading guns in turret on barbette mounts, 1915 Model
4 x 2-gun mounts on centreline ends, evenly spread
2 raised mounts - superfiring
20 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 200 per gun
Quick firing guns in deck and hoist mounts, 1909 Model
10 x Single mounts on sides, evenly spread
4 raised mounts
8 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
8 x Single mounts on sides, evenly spread
8 raised mounts
24 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
6 x Quad mounts on sides, evenly spread
6 raised mounts
10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1925 Model
10 x Single mounts on sides, evenly spread
10 raised mounts
Weight of broadside 18,871 lbs / 8,560 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.4" / 340 mm 513.35 ft / 156.47 m 18.68 ft / 5.69 m
Ends: 1.97" / 50 mm 339.67 ft / 103.53 m 13.12 ft / 4.00 m
Main Belt covers 93 % of normal length
Main Belt inclined 15.00 degrees (positive = in)
- Torpedo Bulkhead - Additional damage containing bulkheads:
2.56" / 65 mm 513.35 ft / 156.47 m 34.45 ft / 10.50 m
Beam between torpedo bulkheads 84.32 ft / 25.70 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 17.3" / 440 mm 7.09" / 180 mm 11.8" / 300 mm
2nd: 1.97" / 50 mm 0.59" / 15 mm 3.94" / 100 mm
3rd: 0.20" / 5 mm - 0.98" / 25 mm
4th: - - 0.59" / 15 mm
5th: 0.20" / 5 mm - -
- Armoured deck - multiple decks:
For and Aft decks: 4.53" / 115 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 13.39" / 340 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 180,000 shp / 134,280 Kw = 30.46 kts
Range 8,000nm at 14.00 kts
Bunker at max displacement = 4,700 tons
Complement:
1,696 - 2,206
Cost:
£14.627 million / $58.509 million
Distribution of weights at normal displacement:
Armament: 4,001 tons, 7.8 %
- Guns: 4,001 tons, 7.8 %
Armour: 16,071 tons, 31.5 %
- Belts: 5,852 tons, 11.5 %
- Torpedo bulkhead: 1,674 tons, 3.3 %
- Armament: 3,315 tons, 6.5 %
- Armour Deck: 4,833 tons, 9.5 %
- Conning Tower: 397 tons, 0.8 %
Machinery: 5,762 tons, 11.3 %
Hull, fittings & equipment: 17,316 tons, 33.9 %
Fuel, ammunition & stores: 4,932 tons, 9.7 %
Miscellaneous weights: 2,925 tons, 5.7 %
- Hull below water: 1,900 tons
- Hull above water: 250 tons
- On freeboard deck: 675 tons
- Above deck: 100 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
70,998 lbs / 32,204 Kg = 33.8 x 16.1 " / 410 mm shells or 10.2 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 7.1 ft / 2.2 m
Roll period: 16.5 seconds
Steadiness - As gun platform (Average = 50 %): 49 %
- Recoil effect (Restricted arc if above 1.00): 0.68
Seaboat quality (Average = 1.00): 1.07
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.640 / 0.644
Length to Beam Ratio: 8.13 : 1
'Natural speed' for length: 29.21 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 45
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 5.64 ft / 1.72 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.82 %, 29.53 ft / 9.00 m, 27.07 ft / 8.25 m
- Forward deck: 40.00 %, 27.07 ft / 8.25 m, 27.07 ft / 8.25 m
- Aft deck: 20.18 %, 18.04 ft / 5.50 m, 18.04 ft / 5.50 m
- Quarter deck: 19.00 %, 18.04 ft / 5.50 m, 18.04 ft / 5.50 m
- Average freeboard: 23.74 ft / 7.24 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 92.4 %
- Above water (accommodation/working, high = better): 183.5 %
Waterplane Area: 67,950 Square feet or 6,313 Square metres
Displacement factor (Displacement / loading): 107 %
Structure weight / hull surface area: 203 lbs/sq ft or 993 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.00
- Longitudinal: 1.02
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Misc Weight Distribution
-Below Water (1900t)
--1445t Electric Drives
--200t Additional Pumps
--200t Additional Damage Control Equipment
--50t Improved Food & Drink storage
-Above Water (250t)
--40t Improved Officer Accommodations
--40t Improved Crew Accommodations
--70t Additional Damage Control Equipment
--20t Enhanced Ventilation and Crew Comfort
--50t Long Range Wireless (2x)
--30t Construction Reserve
-On Deck (675t)
--375t 1918 Fire Control
--50t Reserved for Future Aviation Facilities (2x Recon Plane & 2x Catapults)
--50t Flag Facilities
--50t Enhanced Ventilation and Crew Comfort
--80t Power Assist for Caesemate guns
--10t Short Range Wireless
--35t Construction Reserve
-Above Deck (100t)
--15t Additional Optical Spotting Equipment
--70t Night Fighting Equipment
--15t Improved Signaling Equipment
Quote from: Kaiser Kirk on February 27, 2023, 10:05:46 PM
Question - on both the AC and the Cruiser, you have fairly shallow hulls.
Is there a storyline reason?
Now I tend to try for some ships under 7.5m, but others I keep to 9.5m
The storyline reasons are my Dutch navy in Wesworld where Soerabaja harbor was mostly 7.5m, and the OTL USN had
that depth as a limiter for a bit for operations off Mexico...So in my mind 7.5m becomes a proxy for 'shallow water' ports.
Which has little relevance to Navalism.
BUT...if there isn't a particular reason.... I think you could bring down hull resistance and increase hull girder depth by making them deeper,
dropping BC and saving weight. You'd probably boost seakeeping as well as the BC drops, and so be able to trim freeboard.
Mostly this results from the OTL designs these ships are initially derived from. At least as far as cruisers go, I do have some reasonably shallow water to work in with respect to the Texas coast and the Amazon delta, so having the draft of non-capital ships be kept limited where possible increases possible options.
QuoteMostly this results from the OTL designs these ships are initially derived from. At least as far as cruisers go, I do have some reasonably shallow water to work in with respect to the Texas coast and the Amazon delta, so having the draft of non-capital ships be kept limited where possible increases possible options.
Byzantium also tries to limit the draft of its colonial ships.
The seabed in these coasts is not well known.
Quote from: Jefgte on February 28, 2023, 01:09:32 AM
Byzantium also tries to limit the draft of its colonial ships.
The seabed in these coasts is not well known.
One thing I vaguely wish we could go back and change is to add a couple 'depth' shades to the map,
one for over 30m and over 100m deep, to guide mine and sub matters,
the other for max draft of ~7.5m. Oh, and 'secondary' ports with a 7.5m cap - for more littoral considerations.
However it would be a terrific amount of work at this stage, for a limited gain.
Right now, I spend a fair amount of time using Google maps for near-port depths, but that is
both time consumptive and of questionable accuracy. Plus no one knows until the war happens,
which is less useful for planning.
I tend to go shallow on draft as well, because I work a shallow sea with a lot of shoals. It increases tactical flexibility.
I was going to opine that I thought the deck armor on the fast battleship too light,
but I may have been too hasty.
I was basing the initial reaction off the numbers for the USN 14"/45 in Navweaps, which are
apparently for the shells in use in 1942.
The numbers in Navweaps for the RN 15/42 with the 1,938lb are apparently from pre1935 calc
-presumably when upgrading to these were planned- and if scaled for the Roman 16",
I'm thinking the 115mm probably checks out up to the 24km max range.
Looking ahead to some refit options, the plan is for the Emperor Trajan VIII class battleships to be retained and form the Mediterranean Fleet's battle squadron with the pending retirement of the older pre-dreads from service. Given their age, some work is needed. The minimum option is presented below. It replaces the old mixed propulsion plan with a diesel electric drive (for an impressive 8578nm range at 14 knts given her limited bunker), refreshes the secondaries and AA to current standards, refreshes the main battery with guns which can fire an impressive 625kg shell, adds new deck armor, and improves MISC weight for fun things.
QuoteEmperor Trajan VIII, Roman Imperial Republic Battleship laid down 1905 (Engine 1928)
Displacement:
15,484 t light; 16,447 t standard; 17,429 t normal; 18,215 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(465.88 ft / 459.32 ft) x 82.02 ft x (24.61 / 25.55 ft)
(142.00 m / 140.00 m) x 25.00 m x (7.50 / 7.79 m)
Armament:
6 - 13.39" / 340 mm 40.0 cal guns - 1,377.89lbs / 625.00kg shells, 84 per gun
Breech loading guns in turret on barbette mounts, 1928 Model
3 x Twin mounts on centreline, evenly spread
16 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 250 per gun
Quick firing guns in casemate mounts, 1909 Model
16 x Single mounts on sides, evenly spread
4 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
4 x Single mounts on sides, evenly spread
4 raised mounts
12 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck mounts, 1926 Model
3 x Quad mounts on centreline, evenly spread
3 raised mounts
10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1925 Model
10 x Single mounts on sides, evenly spread
10 raised mounts
Weight of broadside 9,736 lbs / 4,416 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 11.8" / 300 mm 298.56 ft / 91.00 m 18.04 ft / 5.50 m
Ends: 3.54" / 90 mm 160.73 ft / 48.99 m 9.84 ft / 3.00 m
Upper: 4.72" / 120 mm 298.56 ft / 91.00 m 9.02 ft / 2.75 m
Main Belt covers 100 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 13.4" / 340 mm 7.09" / 180 mm 11.0" / 280 mm
2nd: 4.72" / 120 mm 1.97" / 50 mm 1.97" / 50 mm
3rd: 0.20" / 5 mm - 0.98" / 25 mm
- Armoured deck - multiple decks:
For and Aft decks: 3.35" / 85 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm
Machinery:
Diesel Internal combustion generators, and steam turbines
Electric motors, 4 shafts, 16,000 ihp / 11,936 Kw = 18.17 kts
Range 4,515nm at 14.00 kts
Bunker at max displacement = 1,768 tons
Complement:
757 - 985
Cost:
£1.299 million / $5.197 million
Distribution of weights at normal displacement:
Armament: 1,392 tons, 8.0 %
- Guns: 1,392 tons, 8.0 %
Armour: 6,969 tons, 40.0 %
- Belts: 3,642 tons, 20.9 %
- Armament: 1,570 tons, 9.0 %
- Armour Deck: 1,614 tons, 9.3 %
- Conning Tower: 143 tons, 0.8 %
Machinery: 645 tons, 3.7 %
Hull, fittings & equipment: 5,663 tons, 32.5 %
Fuel, ammunition & stores: 1,945 tons, 11.2 %
Miscellaneous weights: 815 tons, 4.7 %
- Hull below water: 450 tons
- Hull above water: 100 tons
- On freeboard deck: 225 tons
- Above deck: 40 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
38,451 lbs / 17,441 Kg = 32.1 x 13.4 " / 340 mm shells or 4.5 torpedoes
Stability (Unstable if below 1.00): 1.36
Metacentric height 6.4 ft / 1.9 m
Roll period: 13.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.69
Seaboat quality (Average = 1.00): 1.95
Hull form characteristics:
Hull has low quarterdeck ,
a ram bow and a cruiser stern
Block coefficient (normal/deep): 0.658 / 0.662
Length to Beam Ratio: 5.60 : 1
'Natural speed' for length: 21.43 kts
Power going to wave formation at top speed: 45 %
Trim (Max stability = 0, Max steadiness = 100): 36
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: -4.92 ft / -1.50 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 21.33 ft / 6.50 m, 20.51 ft / 6.25 m
- Forward deck: 30.00 %, 20.51 ft / 6.25 m, 20.51 ft / 6.25 m
- Aft deck: 35.00 %, 20.51 ft / 6.25 m, 20.51 ft / 6.25 m
- Quarter deck: 15.00 %, 11.48 ft / 3.50 m, 11.48 ft / 3.50 m
- Average freeboard: 19.22 ft / 5.86 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 52.1 %
- Above water (accommodation/working, high = better): 150.0 %
Waterplane Area: 29,074 Square feet or 2,701 Square metres
Displacement factor (Displacement / loading): 113 %
Structure weight / hull surface area: 155 lbs/sq ft or 755 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.39
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Its late so I haven't costed it out. I'll play around with a reconstruction-level option later.
The lack of notes makes assessing a little harder :)
For a predread, fairly redoubtable.
I've been stripping off the end belts and replacing them
with lighter ones - low cost, frees some weight.
I really wonder what the MV of the 340 firing a 625kg shell is.
Curious what the 850tons of misc weight is.
For the Diesel and Turbo generators you'll need ~300,
FC will be 140, LR radio 25... lots of extra there
which could be laminated onto your armor deck.
Likewise you'll eventually need to include a description
of that new armor in the notes.
Notes
Quote16000 SHP (18 knt) - 645 Natural + 162 Electric + 226 Diesel = 1033t
Range to 4515@14knts (1768 Bunker) [+ 677 from Electric, +3,386 from Diesel, 8578 Full Range]
Refreshed/New 340L40 firing 625kg shell
Replace casemates with 140L55
Remove 75mm guns
Add 90mm AA
Add 28mm AA (one quad per turret top)
Add 7.5mm MMG
New Deck Armor (90mm main, 35mm ends)
Additional MISC weight
Costs:
Arms & Engines
Totaly new guns - 1.4BP, $2.8
Diesel Engines - .645BP, $1.29
Armor & Functional MISC
New Armored Decks - 1.62BP, $1.62
Functional MISC - .815BP, $0.815
Hull, fittings & Equipment
NONE
Fuel, Ammo
$0.9725
Total per ship: $7.50, 4.48BP
Total Program Cost: $15, 8.96BP
Not to shabby to refresh the MEDBAT with.
First crack at the 1926 Heavy Destroyer. An update to the HFD-21 class, it trades a set of torpedo tubes for an additional 140mm gun. Slightly faster, longer legged, and updates AA to a single quad 28mm mount. As a trade-off for mounting a smaller number of fish, carries a more individually powerful 610mm torpedo in a single quad mount (a change I will make to the preceding designs).
QuoteHFD-26, Imperial Roman Republic Heavy Destoyer laid down 1926
Displacement:
2,000 t light; 2,090 t standard; 2,381 t normal; 2,614 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(403.56 ft / 393.70 ft) x 37.07 ft x (13.45 / 14.35 ft)
(123.00 m / 120.00 m) x 11.30 m x (4.10 / 4.37 m)
Armament:
5 - 5.51" / 140 mm 40.0 cal guns - 85.98lbs / 39.00kg shells, 140 per gun
Quick firing guns in deck mounts, 1917 Model
5 x Single mounts on centreline ends, majority aft
3 raised mounts - superfiring
4 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck mount, 1926 Model
1 x Quad mount on centreline, forward deck aft
1 raised mount
4 - 0.26" / 6.5 mm 110.0 cal guns - 0.01lbs / 0.00kg shells, 10,000 per gun
Machine guns in deck mounts, 1926 Model
4 x Single mounts on sides, evenly spread
4 raised mounts
Weight of broadside 433 lbs / 196 kg
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm 0.20" / 5 mm -
2nd: 0.20" / 5 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 48,000 shp / 35,808 Kw = 33.49 kts
Range 6,000nm at 14.00 kts
Bunker at max displacement = 525 tons
Complement:
169 - 221
Cost:
£0.925 million / $3.702 million
Distribution of weights at normal displacement:
Armament: 63 tons, 2.6 %
- Guns: 63 tons, 2.6 %
Armour: 8 tons, 0.3 %
- Armament: 8 tons, 0.3 %
Machinery: 1,290 tons, 54.2 %
Hull, fittings & equipment: 560 tons, 23.5 %
Fuel, ammunition & stores: 381 tons, 16.0 %
Miscellaneous weights: 80 tons, 3.4 %
- Hull below water: 20 tons
- On freeboard deck: 60 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
614 lbs / 278 Kg = 7.3 x 5.5 " / 140 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.54
Metacentric height 2.3 ft / 0.7 m
Roll period: 10.2 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.23
Seaboat quality (Average = 1.00): 1.04
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.424 / 0.437
Length to Beam Ratio: 10.62 : 1
'Natural speed' for length: 19.84 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 0.30 ft / 0.09 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 20.51 ft / 6.25 m, 20.51 ft / 6.25 m
- Forward deck: 17.50 %, 20.51 ft / 6.25 m, 20.51 ft / 6.25 m
- Aft deck: 47.50 %, 11.48 ft / 3.50 m, 11.48 ft / 3.50 m
- Quarter deck: 15.00 %, 11.48 ft / 3.50 m, 11.48 ft / 3.50 m
- Average freeboard: 14.87 ft / 4.53 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 183.7 %
- Above water (accommodation/working, high = better): 143.1 %
Waterplane Area: 9,128 Square feet or 848 Square metres
Displacement factor (Displacement / loading): 72 %
Structure weight / hull surface area: 35 lbs/sq ft or 171 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.34
- Overall: 0.56
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
--20t 4x610mm (1918) Torpedo Tubes (1x4 mount centerline)
--6t 1918 FC
--25t LR Wireless
--15t 1915 Hydrophone
--14t Depth Charges
--3t DC Throwers
--3t Night Fighting Equipment
--5t Construction Reserve
And their general counterpart. Updated GFD-21, full armament refresh, little faster and longer legged.
QuoteGFD-1926, Imperial Roman Republic Destroyer laid down 1926
Displacement:
1,280 t light; 1,332 t standard; 1,549 t normal; 1,723 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(334.64 ft / 328.08 ft) x 29.53 ft x (10.66 / 11.58 ft)
(102.00 m / 100.00 m) x 9.00 m x (3.25 / 3.53 m)
Armament:
4 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 175 per gun
Quick firing guns in deck mounts, 1926 Model
2 x Twin mounts on centreline ends, evenly spread
2 - 2.24" / 57.0 mm 55.0 cal guns - 6.06lbs / 2.75kg shells, 750 per gun
Anti-air guns in deck mount, 1926 Model
1 x Twin mount on centreline, forward deck aft
1 raised mount
4 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck mount, 1926 Model
1 x Quad mount on centreline, aft deck aft
1 raised mount
Weight of broadside 99 lbs / 45 kg
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm 0.20" / 5 mm -
2nd: 0.20" / 5 mm - -
3rd: 0.20" / 5 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 30,000 shp / 22,380 Kw = 30.83 kts
Range 5,750nm at 14.00 kts
Bunker at max displacement = 391 tons
Complement:
123 - 160
Cost:
£0.554 million / $2.214 million
Distribution of weights at normal displacement:
Armament: 19 tons, 1.3 %
- Guns: 19 tons, 1.3 %
Armour: 3 tons, 0.2 %
- Armament: 3 tons, 0.2 %
Machinery: 780 tons, 50.4 %
Hull, fittings & equipment: 367 tons, 23.7 %
Fuel, ammunition & stores: 269 tons, 17.4 %
Miscellaneous weights: 110 tons, 7.1 %
- Hull below water: 25 tons
- Hull above water: 10 tons
- On freeboard deck: 75 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
462 lbs / 210 Kg = 20.8 x 3.5 " / 90 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.26
Metacentric height 1.2 ft / 0.4 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 67 %
- Recoil effect (Restricted arc if above 1.00): 0.14
Seaboat quality (Average = 1.00): 1.10
Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.525 / 0.537
Length to Beam Ratio: 11.11 : 1
'Natural speed' for length: 18.11 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 61
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.89 ft / 0.27 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 15.58 ft / 4.75 m, 13.94 ft / 4.25 m
- Forward deck: 30.00 %, 13.94 ft / 4.25 m, 13.94 ft / 4.25 m
- Aft deck: 35.00 %, 13.94 ft / 4.25 m, 13.94 ft / 4.25 m
- Quarter deck: 15.00 %, 13.94 ft / 4.25 m, 13.94 ft / 4.25 m
- Average freeboard: 14.07 ft / 4.29 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 170.0 %
- Above water (accommodation/working, high = better): 142.6 %
Waterplane Area: 6,604 Square feet or 614 Square metres
Displacement factor (Displacement / loading): 74 %
Structure weight / hull surface area: 28 lbs/sq ft or 134 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.83
- Overall: 0.57
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
--20t 4x610mm (1918) Torpedo Tubes (1x4 mount cenerline)
--2t 1918 FC
--25t LR Wireless
--3t Night Fighting Equipment
--10t Construction Reserve
--15t 1915 Hydrophone
--20t Depth Charges
--5t DC Throwers
--5t ASW Paravane
--5t Minesweaping Paravane
Those would be some big fish.
A refurbishment of the Praeventores class battleships. The oldest class mounting the 340L45, this update stops short of a major reconstruction as the class has some issues with deck space due to its all-main-deck turrets. However, it is viewed that with updating these ships can serve as the heavy anchor of a station squadron, likely to be the fleet based out of Havana. Features a refreshed 340L45 to fire a Superheavy shell.
QuotePraeventores, Imperial Roman Republic Battleship laid down 1909 (Engine 1927)
Displacement:
25,468 t light; 27,090 t standard; 28,132 t normal; 28,966 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(633.20 ft / 623.36 ft) x 88.58 ft x (26.25 / 26.92 ft)
(193.00 m / 190.00 m) x 27.00 m x (8.00 / 8.20 m)
Armament:
12 - 13.39" / 340 mm 45.0 cal guns - 1,450.64lbs / 658.00kg shells, 91 per gun
Breech loading guns in turret on barbette mounts, 1927 Model
4 x 3-gun mounts on centreline, evenly spread
16 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 175 per gun
Quick firing guns in casemate mounts, 1909 Model
16 x Single mounts on sides, evenly spread
16 hull mounts in casemates- Limited use in heavy seas
4 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
4 x Single mounts on sides, evenly spread
4 raised mounts
16 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck mounts, 1926 Model
4 x Quad mounts on centreline, evenly spread
4 raised mounts
10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1925 Model
10 x Single mounts on sides, evenly spread
10 raised mounts
Weight of broadside 18,879 lbs / 8,563 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.6" / 320 mm 405.18 ft / 123.50 m 18.04 ft / 5.50 m
Ends: 1.97" / 50 mm 218.14 ft / 66.49 m 9.84 ft / 3.00 m
Upper: 1.97" / 50 mm 405.18 ft / 123.50 m 9.02 ft / 2.75 m
Main Belt covers 100 % of normal length
- Torpedo Bulkhead - Additional damage containing bulkheads:
1.57" / 40 mm 405.18 ft / 123.50 m 26.25 ft / 8.00 m
Beam between torpedo bulkheads 78.74 ft / 24.00 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 13.4" / 340 mm 7.09" / 180 mm 11.0" / 280 mm
2nd: 3.94" / 100 mm 0.98" / 25 mm 1.97" / 50 mm
3rd: 0.20" / 5 mm - 0.98" / 25 mm
4th: 0.20" / 5 mm - -
- Armoured deck - multiple decks:
For and Aft decks: 4.53" / 115 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 36,000 shp / 26,856 Kw = 21.35 kts
Range 4,448nm at 14.00 kts
Bunker at max displacement = 1,876 tons
Complement:
1,085 - 1,411
Cost:
£2.500 million / $9.999 million
Distribution of weights at normal displacement:
Armament: 3,402 tons, 12.1 %
- Guns: 3,402 tons, 12.1 %
Armour: 10,895 tons, 38.7 %
- Belts: 4,473 tons, 15.9 %
- Torpedo bulkhead: 620 tons, 2.2 %
- Armament: 2,419 tons, 8.6 %
- Armour Deck: 3,187 tons, 11.3 %
- Conning Tower: 196 tons, 0.7 %
Machinery: 1,136 tons, 4.0 %
Hull, fittings & equipment: 8,945 tons, 31.8 %
Fuel, ammunition & stores: 2,664 tons, 9.5 %
Miscellaneous weights: 1,090 tons, 3.9 %
- Hull below water: 500 tons
- Hull above water: 100 tons
- On freeboard deck: 450 tons
- Above deck: 40 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
46,154 lbs / 20,935 Kg = 38.5 x 13.4 " / 340 mm shells or 7.2 torpedoes
Stability (Unstable if below 1.00): 1.29
Metacentric height 6.6 ft / 2.0 m
Roll period: 14.5 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.78
Seaboat quality (Average = 1.00): 1.36
Hull form characteristics:
Hull has low quarterdeck ,
a ram bow and a cruiser stern
Block coefficient (normal/deep): 0.679 / 0.682
Length to Beam Ratio: 7.04 : 1
'Natural speed' for length: 24.97 kts
Power going to wave formation at top speed: 43 %
Trim (Max stability = 0, Max steadiness = 100): 37
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 4.92 ft / 1.50 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 18.86 ft / 5.75 m, 18.86 ft / 5.75 m
- Forward deck: 30.00 %, 18.86 ft / 5.75 m, 18.86 ft / 5.75 m
- Aft deck: 35.00 %, 18.86 ft / 5.75 m, 18.86 ft / 5.75 m
- Quarter deck: 15.00 %, 9.84 ft / 3.00 m, 9.84 ft / 3.00 m
- Average freeboard: 17.51 ft / 5.34 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 70.9 %
- Above water (accommodation/working, high = better): 143.9 %
Waterplane Area: 43,447 Square feet or 4,036 Square metres
Displacement factor (Displacement / loading): 100 %
Structure weight / hull surface area: 182 lbs/sq ft or 889 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.30
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
Good seaboat, rides out heavy weather easily
QuoteNew Engines: 1136t (+285t Electric Drives)
Range Recalculated to 4448@14knts
Refreshed 340/45 firing 658kg shell (reduced to 91rpg)
Remove 75mm guns
Add 90mm AA
Add 28mm AA (one quad per turret top)
Add 7.5mm MMG
New End and Upper Belts
New Decks
Trim Adjusted
Additional MISC weight (-285t Electric Drives)
Costs
Arms & Machinery
New Engines: 1.43BP/$2.86
New Guns: 3.41BP/$6.82
Armor & FMW
New End Belts: .156
New Upper Belts: .313
New Decks: 3.19
MISC Weight: 1.09
Hull, Fittings, & Equipment
Trim Change: 0BP/$5.1
Total Materials Costs: $19.53 / 9.59BP
Total Program Cost [Both ships] $49.26 / 19.18BP
please put in the design notes that the 15mm extra deck armor is laminated on, and if that's to the upper, the main, or a splinter deck.
It's not quite as good as solid deck armor.
Quote from: snip on May 12, 2023, 05:07:53 PM
Features a refreshed 340L45 to fire a Superheavy shell.
Commentary
1) You say 'refreshed' which I suppose means in 1926 & 1926.5 you'll research it.
That fits with my presumption has been upping the shell weight took a new gun.
Basically, precedent is the existing USN 16" couldn't fire the superheavies of the later USN 16".
2) Refreshing for you is quite doable.
It looks like you finish the 1920 artillery tech in 1925 HY2.
"For guns larger than 8.27"/210mm, it takes two years to research, at a cost of $0.50 per half-year."
But "Refreshing costs same as if the gun or mount was newly developed but the development time is halved.
So by 1927 it's quite possible to have finished researching a gun
3) What do you wind up with ?
Gun Research chart
The 1910 tech is 4200 for a 40 cal
Which oddly is the upper end of ME/Cal for this bore size.
Looks like you drop from 816mps to 742mps
The final MV for the new shell is only 10mps below the classic Brit 15", so not unreasonable,
Curious bit of math - looks like at 18000m, a target would move about 236m at 21knots in the ~2.25 sec time difference.
Will gain a bit in deck penetration, and the increased weight should give middling belt pen.
The USN 14"/45 had about the same KG and more MV, http://www.navweaps.com/Weapons/WNUS_14-45_mk1.php (http://www.navweaps.com/Weapons/WNUS_14-45_mk1.php)
| ME | Bore | Shell wt max Cal. | | Max Caliber | Caliber desired | | MV | MPS |
| 4200.0 | 135.8 | 1200.8 | | 40.0 | 40.0 | | 2644.8 | 816.3 |
| 4200.0 | 135.8 | 1450.6 | | 40.0 | 40.0 | | 2406.4 | 742.7 |
| | | | | | | | | |
The calculations include totally new deck armor, not a 15mm lamination onto the existing deck.
The 340mm guns in question are L45s, not L40s. The L40s are on the ETV and Invictas, which I dont think Im going to end up rebuilding. the 340L45 was originally created under the 1905 gun tech.
First pass at the 1926 cruiser. Slight improvements over the preceding class, mainly in protection and non-primary armament.
QuoteGPC-26, Imperial Roman Republic Cruiser laid down 1926
Displacement:
10,000 t light; 10,420 t standard; 11,675 t normal; 12,679 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(602.04 ft / 590.55 ft) x 63.98 ft x (21.33 / 22.71 ft)
(183.50 m / 180.00 m) x 19.50 m x (6.50 / 6.92 m)
Armament:
8 - 7.09" / 180 mm 50.0 cal guns - 187.39lbs / 85.00kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1915 Model
4 x 2-gun mounts on centreline ends, evenly spread
2 raised mounts - superfiring
4 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 175 per gun
Quick firing guns in deck and hoist mounts, 1926 Model
2 x Twin mounts on sides, forward deck aft
4 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
4 x Single mounts on sides, evenly spread
4 raised mounts
8 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
2 x Quad mounts on sides, aft deck centre
2 raised mounts
Weight of broadside 1,933 lbs / 877 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 398.26 ft / 121.39 m 16.40 ft / 5.00 m
Ends: Unarmoured
Main Belt covers 104 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.36" / 60 mm 1.18" / 30 mm 2.36" / 60 mm
2nd: 0.98" / 25 mm 0.59" / 15 mm 1.97" / 50 mm
3rd: 0.20" / 5 mm - 0.59" / 15 mm
4th: - - 0.59" / 15 mm
- Armoured deck - single deck:
For and Aft decks: 1.38" / 35 mm
Forecastle: 0.00" / 0 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 2.76" / 70 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 92,000 shp / 68,632 Kw = 31.80 kts
Range 10,000nm at 14.00 kts
Bunker at max displacement = 2,260 tons
Complement:
561 - 730
Cost:
£3.361 million / $13.446 million
Distribution of weights at normal displacement:
Armament: 600 tons, 5.1 %
- Guns: 600 tons, 5.1 %
Armour: 1,910 tons, 16.4 %
- Belts: 1,057 tons, 9.1 %
- Armament: 220 tons, 1.9 %
- Armour Deck: 602 tons, 5.2 %
- Conning Tower: 31 tons, 0.3 %
Machinery: 2,945 tons, 25.2 %
Hull, fittings & equipment: 4,171 tons, 35.7 %
Fuel, ammunition & stores: 1,675 tons, 14.3 %
Miscellaneous weights: 375 tons, 3.2 %
- Hull below water: 80 tons
- Hull above water: 100 tons
- On freeboard deck: 170 tons
- Above deck: 25 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
14,909 lbs / 6,763 Kg = 83.8 x 7.1 " / 180 mm shells or 1.7 torpedoes
Stability (Unstable if below 1.00): 1.22
Metacentric height 3.7 ft / 1.1 m
Roll period: 14.0 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.43
Seaboat quality (Average = 1.00): 1.17
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.507 / 0.517
Length to Beam Ratio: 9.23 : 1
'Natural speed' for length: 24.30 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 43
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 18.00 %, 27.07 ft / 8.25 m, 25.43 ft / 7.75 m
- Forward deck: 40.00 %, 25.43 ft / 7.75 m, 25.43 ft / 7.75 m
- Aft deck: 27.44 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Quarter deck: 14.56 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Average freeboard: 21.76 ft / 6.63 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 100.6 %
- Above water (accommodation/working, high = better): 187.1 %
Waterplane Area: 25,333 Square feet or 2,354 Square metres
Displacement factor (Displacement / loading): 115 %
Structure weight / hull surface area: 110 lbs/sq ft or 537 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.61
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Quote from: snip on May 12, 2023, 11:11:24 PM
The 340mm guns in question are L45s, not L40s. The L40s are on the ETV and Invictas, which I dont think Im going to end up rebuilding. the 340L45 was originally created under the 1905 gun tech.
Well whoops, messed that one up.
Looks like the MV for the refreshed gun should be ~786mps, pretty decent.
As for the deck, bad presumption on my part, I choose the cheaper route because...I'm cheap. :)
Looking at an addition to the auxiliary forces, a leader for the various 500t sloops. Haven't fully noodled the MISC weight yet.
QuoteLSL-26, Imperial Roman Republic Large Sloop, Leader laid down 1926
Displacement:
2,000 t light; 2,099 t standard; 2,503 t normal; 2,826 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(301.84 ft / 295.28 ft) x 41.83 ft x (14.76 / 16.16 ft)
(92.00 m / 90.00 m) x 12.75 m x (4.50 / 4.93 m)
Armament:
3 - 5.51" / 140 mm 40.0 cal guns - 85.98lbs / 39.00kg shells, 250 per gun
Quick firing guns in deck and hoist mounts, 1917 Model
3 x Single mounts on centreline ends, majority forward
1 raised mount - superfiring
2 - 2.24" / 57.0 mm 43.0 cal guns - 5.52lbs / 2.50kg shells, 750 per gun
Anti-air guns in deck and hoist mount, 1926 Model
1 x Twin mount on centreline, aft deck forward
1 raised mount
4 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck mount, 1926 Model
1 x Quad mount on centreline, aft deck aft
1 raised mount
6 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1925 Model
6 x Single mounts on sides, evenly spread
6 raised mounts
Weight of broadside 272 lbs / 123 kg
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm 0.20" / 5 mm 0.79" / 20 mm
2nd: 0.20" / 5 mm - 0.79" / 20 mm
- Protected deck - single deck:
For and Aft decks: 1.97" / 50 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 1.97" / 50 mm, Aft 0.00" / 0 mm
Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 4,000 shp / 2,984 Kw = 17.05 kts
Range 8,000nm at 14.00 kts
Bunker at max displacement = 727 tons
Complement:
176 - 230
Cost:
£0.379 million / $1.516 million
Distribution of weights at normal displacement:
Armament: 61 tons, 2.4 %
- Guns: 61 tons, 2.4 %
Armour: 294 tons, 11.7 %
- Armament: 5 tons, 0.2 %
- Armour Deck: 280 tons, 11.2 %
- Conning Tower: 8 tons, 0.3 %
Machinery: 128 tons, 5.1 %
Hull, fittings & equipment: 717 tons, 28.7 %
Fuel, ammunition & stores: 503 tons, 20.1 %
Miscellaneous weights: 800 tons, 32.0 %
- Hull below water: 150 tons
- Hull above water: 300 tons
- On freeboard deck: 300 tons
- Above deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5,911 lbs / 2,681 Kg = 70.6 x 5.5 " / 140 mm shells or 2.2 torpedoes
Stability (Unstable if below 1.00): 1.22
Metacentric height 1.9 ft / 0.6 m
Roll period: 12.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.22
Seaboat quality (Average = 1.00): 1.83
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.480 / 0.495
Length to Beam Ratio: 7.06 : 1
'Natural speed' for length: 17.18 kts
Power going to wave formation at top speed: 45 %
Trim (Max stability = 0, Max steadiness = 100): 38
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 2.17 ft / 0.66 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Forward deck: 25.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Aft deck: 40.00 %, 7.38 ft / 2.25 m, 7.38 ft / 2.25 m
- Quarter deck: 15.00 %, 7.38 ft / 2.25 m, 7.38 ft / 2.25 m
- Average freeboard: 11.44 ft / 3.49 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 46.7 %
- Above water (accommodation/working, high = better): 95.0 %
Waterplane Area: 8,086 Square feet or 751 Square metres
Displacement factor (Displacement / loading): 161 %
Structure weight / hull surface area: 60 lbs/sq ft or 292 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.98
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
And the new 500t design.
QuoteSL-26, Imperial Roman Republic Sloop laid down 1926
Displacement:
486 t light; 502 t standard; 600 t normal; 679 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(232.41 ft / 229.66 ft) x 26.25 ft x (8.20 / 8.93 ft)
(70.84 m / 70.00 m) x 8.00 m x (2.50 / 2.72 m)
Armament:
1 - 3.54" / 90.0 mm 50.0 cal gun - 20.94lbs / 9.50kg shells, 75 per gun
Quick firing gun in deck mount, 1926 Model
1 x Single mount on centreline, forward deck forward
4 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 1,500 per gun
Anti-air guns in deck mount, 1926 Model
1 x Quad mount on centreline, aft deck aft
1 raised mount
Weight of broadside 24 lbs / 11 kg
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm 0.20" / 5 mm -
Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 3,600 shp / 2,686 Kw = 20.57 kts
Range 4,500nm at 14.00 kts
Bunker at max displacement = 177 tons
Complement:
59 - 78
Cost:
£0.120 million / $0.480 million
Distribution of weights at normal displacement:
Armament: 6 tons, 1.0 %
- Guns: 6 tons, 1.0 %
Armour: 1 tons, 0.2 %
- Armament: 1 tons, 0.2 %
Machinery: 115 tons, 19.2 %
Hull, fittings & equipment: 224 tons, 37.4 %
Fuel, ammunition & stores: 114 tons, 18.9 %
Miscellaneous weights: 140 tons, 23.3 %
- Hull below water: 30 tons
- Hull above water: 25 tons
- On freeboard deck: 70 tons
- Above deck: 15 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,105 lbs / 501 Kg = 49.7 x 3.5 " / 90 mm shells or 0.7 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 0.9 ft / 0.3 m
Roll period: 11.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.05
Seaboat quality (Average = 1.00): 1.50
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.425 / 0.441
Length to Beam Ratio: 8.75 : 1
'Natural speed' for length: 15.15 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 15.58 ft / 4.75 m, 15.58 ft / 4.75 m
- Forward deck: 17.00 %, 15.58 ft / 4.75 m, 15.58 ft / 4.75 m
- Aft deck: 48.00 %, 6.56 ft / 2.00 m, 6.56 ft / 2.00 m
- Quarter deck: 15.00 %, 6.56 ft / 2.00 m, 6.56 ft / 2.00 m
- Average freeboard: 9.90 ft / 3.02 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 75.9 %
- Above water (accommodation/working, high = better): 108.6 %
Waterplane Area: 3,771 Square feet or 350 Square metres
Displacement factor (Displacement / loading): 155 %
Structure weight / hull surface area: 35 lbs/sq ft or 170 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.91
- Longitudinal: 2.30
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Might be beneficial for the leader to be as fast as the little guys.
In general I like both. Curious to see what you're doing with all the misc. weight on the leader...
QuoteMight be beneficial for the leader to be as fast as the little guys...
I agree.
-----------------
I think that "Overall" could be 0.75
=> Increase armament to have good escort ship.
Revised Leader, now with MISC weight
QuoteLSL-26, Imperial Roman Republic Large Sloop, Leader laid down 1926
Displacement:
2,000 t light; 2,099 t standard; 2,503 t normal; 2,826 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(301.84 ft / 295.28 ft) x 41.83 ft x (14.76 / 16.16 ft)
(92.00 m / 90.00 m) x 12.75 m x (4.50 / 4.93 m)
Armament:
3 - 5.51" / 140 mm 40.0 cal guns - 85.98lbs / 39.00kg shells, 250 per gun
Quick firing guns in deck and hoist mounts, 1917 Model
3 x Single mounts on centreline ends, majority forward
1 raised mount - superfiring
2 - 2.24" / 57.0 mm 43.0 cal guns - 5.52lbs / 2.50kg shells, 750 per gun
Anti-air guns in deck and hoist mount, 1926 Model
1 x Twin mount on centreline, aft deck forward
1 raised mount
4 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck mount, 1926 Model
1 x Quad mount on centreline, aft deck aft
1 raised mount
6 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1925 Model
6 x Single mounts on sides, evenly spread
6 raised mounts
Weight of broadside 272 lbs / 123 kg
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm 0.20" / 5 mm 0.79" / 20 mm
2nd: 0.20" / 5 mm - 0.79" / 20 mm
- Box over machinery & magazines:
2.17" / 55 mm
- Conning towers: Forward 2.36" / 60 mm, Aft 0.00" / 0 mm
Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 8,000 shp / 5,968 Kw = 20.37 kts
Range 8,000nm at 14.00 kts
Bunker at max displacement = 727 tons
Complement:
176 - 230
Cost:
£0.441 million / $1.764 million
Distribution of weights at normal displacement:
Armament: 61 tons, 2.4 %
- Guns: 61 tons, 2.4 %
Armour: 196 tons, 7.8 %
- Armament: 5 tons, 0.2 %
- Armour Deck: 181 tons, 7.2 %
- Conning Tower: 9 tons, 0.4 %
Machinery: 256 tons, 10.2 %
Hull, fittings & equipment: 536 tons, 21.4 %
Fuel, ammunition & stores: 503 tons, 20.1 %
Miscellaneous weights: 950 tons, 38.0 %
- Hull below water: 300 tons
- Hull above water: 300 tons
- On freeboard deck: 300 tons
- Above deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,054 lbs / 1,385 Kg = 36.5 x 5.5 " / 140 mm shells or 1.2 torpedoes
Stability (Unstable if below 1.00): 1.27
Metacentric height 2.1 ft / 0.6 m
Roll period: 12.2 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.18
Seaboat quality (Average = 1.00): 1.31
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.480 / 0.495
Length to Beam Ratio: 7.06 : 1
'Natural speed' for length: 17.18 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 39
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 2.17 ft / 0.66 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Forward deck: 25.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Aft deck: 40.00 %, 7.38 ft / 2.25 m, 7.38 ft / 2.25 m
- Quarter deck: 15.00 %, 7.38 ft / 2.25 m, 7.38 ft / 2.25 m
- Average freeboard: 11.44 ft / 3.49 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 69.4 %
- Above water (accommodation/working, high = better): 95.0 %
Waterplane Area: 8,086 Square feet or 751 Square metres
Displacement factor (Displacement / loading): 134 %
Structure weight / hull surface area: 45 lbs/sq ft or 222 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.70
- Longitudinal: 1.49
- Overall: 0.75
Caution: Hull subject to strain in open-sea
Excellent machinery, storage, compartmentation space
Adequate accommodation and workspace room
Good seaboat, rides out heavy weather easily
Misc Distribution
--Below Water (300t)
----65t Electric Drives
----192t Diesel Engines
----15t Enhanced Hydrophones
----10t Sonar
----15t Structural Reinforcement (to minimize damage from near-miss explosions)
----3t Construction Reserve
--Above Water (300t)
----50t 2xLR Wireless
----150t Additional Marine Accommodations
----75t Medical Facilities
----25t Flotilla Leader Facilities
--On Deck (300t)
----7t 1918 Fire Control
----25t Single Recon Floatplane with Catapult
----10t SR Wireless
----50t Minesweeping Equipment
----50t Mines
----75t Flotilla Leader Facilities
----40t Additional Ships Boats
----10t Improved Ventalation
----2t Single Depth Charge Throwers (one per side)
----1t Y Depth Charge Thrower (Astern)
----20t 280kg Depth Charges
----8t Construction Reserve
--Above Deck (50t)
----40t Nightfighting Equipment
----10t Improved Signaling Equipment
And the little counterpart.
Quote
SL-26, Imperial Roman Republic Sloop laid down 1926
Displacement:
500 t light; 515 t standard; 603 t normal; 673 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(234.72 ft / 229.66 ft) x 26.25 ft x (8.20 / 8.85 ft)
(71.54 m / 70.00 m) x 8.00 m x (2.50 / 2.70 m)
Armament:
1 - 3.54" / 90.0 mm 50.0 cal gun - 20.94lbs / 9.50kg shells, 75 per gun
Quick firing gun in deck mount, 1926 Model
1 x Single mount on centreline, forward deck forward
4 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 1,500 per gun
Anti-air guns in deck mount, 1926 Model
1 x Quad mount on centreline, aft deck aft
1 raised mount
Weight of broadside 24 lbs / 11 kg
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm 0.20" / 5 mm -
Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 3,600 shp / 2,686 Kw = 20.54 kts
Range 4,000nm at 14.00 kts
Bunker at max displacement = 158 tons
Complement:
60 - 79
Cost:
£0.122 million / $0.486 million
Distribution of weights at normal displacement:
Armament: 6 tons, 1.0 %
- Guns: 6 tons, 1.0 %
Armour: 1 tons, 0.2 %
- Armament: 1 tons, 0.2 %
Machinery: 115 tons, 19.1 %
Hull, fittings & equipment: 187 tons, 31.1 %
Fuel, ammunition & stores: 103 tons, 17.1 %
Miscellaneous weights: 190 tons, 31.5 %
- Hull below water: 125 tons
- Hull above water: 25 tons
- On freeboard deck: 25 tons
- Above deck: 15 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
836 lbs / 379 Kg = 37.6 x 3.5 " / 90 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.36
Metacentric height 1.2 ft / 0.4 m
Roll period: 10.3 seconds
Steadiness - As gun platform (Average = 50 %): 80 %
- Recoil effect (Restricted arc if above 1.00): 0.06
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.427 / 0.442
Length to Beam Ratio: 8.75 : 1
'Natural speed' for length: 15.15 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 40
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 2.17 ft / 0.66 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Forward deck: 25.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Aft deck: 40.00 %, 7.38 ft / 2.25 m, 7.38 ft / 2.25 m
- Quarter deck: 15.00 %, 7.38 ft / 2.25 m, 7.38 ft / 2.25 m
- Average freeboard: 11.44 ft / 3.49 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 92.3 %
- Above water (accommodation/working, high = better): 130.1 %
Waterplane Area: 3,776 Square feet or 351 Square metres
Displacement factor (Displacement / loading): 138 %
Structure weight / hull surface area: 26 lbs/sq ft or 127 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.65
- Longitudinal: 2.73
- Overall: 0.75
Caution: Hull subject to strain in open-sea
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Misc Distribution
--Below Water (125t)
----86t Diesel Engines
----29t Electric Drives
----5t Basic Hydrophone
----5t Construction Reserve
--Above Water (25t)
----25t LR Wireless
--On Deck (25t)
----1t 1918 Fire Control
----3t Three Y Depth Charge Throwers
----5t "Stick Bomb" ASW
----10t 195kg Depth Chages
----10t Minesweeping Equipment
----1t Construction Reserve
--Above Deck (15t)
----10t Night Fighting Equipment
----5t Improved Signaling Equipment
Minor revision to the Armored Cruiser. Updated AA armament to reflect later adopted standard (hybrid 90/28 battery, 57 sub for 90 when weight issues). Minor revisions to armor layout to facilitate additional 90mm guns.
Quote
AC-26B, Imperial Roman Armored Cruiser laid down 1926
Displacement:
17,000 t light; 17,702 t standard; 19,092 t normal; 20,204 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(639.78 ft / 626.64 ft) x 75.46 ft x (22.97 / 24.08 ft)
(195.00 m / 191.00 m) x 23.00 m x (7.00 / 7.34 m)
Armament:
8 - 9.25" / 235 mm 45.0 cal guns - 396.83lbs / 180.00kg shells, 125 per gun
Breech loading guns in turret on barbette mounts, 1919 Model
4 x 2-gun mounts on centreline ends, evenly spread
2 raised mounts - superfiring
6 - 5.51" / 140 mm 55.0 cal guns - 83.78lbs / 38.00kg shells, 175 per gun
Quick firing guns in deck and hoist mounts, 1909 Model
6 x Single mounts on sides, evenly spread
6 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
6 x Single mounts on sides, evenly spread
6 raised mounts
16 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
4 x Quad mounts on side ends, evenly spread
4 raised mounts
10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1925 Model
10 x Single mounts on sides, forward evenly spread
10 raised mounts
Weight of broadside 3,815 lbs / 1,730 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.50" / 165 mm 407.32 ft / 124.15 m 18.32 ft / 5.59 m
Ends: 1.97" / 50 mm 219.29 ft / 66.84 m 10.43 ft / 3.18 m
Main Belt covers 100 % of normal length
Main Belt inclined 10.00 degrees (positive = in)
- Torpedo Bulkhead - Additional damage containing bulkheads:
1.57" / 40 mm 407.32 ft / 124.15 m 24.61 ft / 7.50 m
Beam between torpedo bulkheads 61.52 ft / 18.75 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.25" / 235 mm 3.94" / 100 mm 7.48" / 190 mm
2nd: 1.97" / 50 mm 0.59" / 15 mm 1.97" / 50 mm
3rd: 0.20" / 5 mm - 0.59" / 15 mm
4th: 0.20" / 5 mm - -
5th: 0.20" / 5 mm - -
- Armoured deck - multiple decks:
For and Aft decks: 2.95" / 75 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 7.87" / 200 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 110,000 shp / 82,060 Kw = 30.50 kts
Range 8,000nm at 14.00 kts
Bunker at max displacement = 2,502 tons
Complement:
811 - 1,055
Cost:
£5.070 million / $20.281 million
Distribution of weights at normal displacement:
Armament: 1,117 tons, 5.9 %
- Guns: 1,117 tons, 5.9 %
Armour: 5,609 tons, 29.4 %
- Belts: 2,214 tons, 11.6 %
- Torpedo bulkhead: 584 tons, 3.1 %
- Armament: 951 tons, 5.0 %
- Armour Deck: 1,740 tons, 9.1 %
- Conning Tower: 121 tons, 0.6 %
Machinery: 3,521 tons, 18.4 %
Hull, fittings & equipment: 6,102 tons, 32.0 %
Fuel, ammunition & stores: 2,092 tons, 11.0 %
Miscellaneous weights: 650 tons, 3.4 %
- Hull below water: 200 tons
- Hull above water: 200 tons
- On freeboard deck: 200 tons
- Above deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
27,517 lbs / 12,482 Kg = 69.5 x 9.3 " / 235 mm shells or 3.9 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 4.4 ft / 1.3 m
Roll period: 15.2 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.47
Seaboat quality (Average = 1.00): 1.01
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.615 / 0.621
Length to Beam Ratio: 8.30 : 1
'Natural speed' for length: 25.03 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 2.99 ft / 0.91 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 27.89 ft / 8.50 m, 25.43 ft / 7.75 m
- Forward deck: 45.00 %, 25.43 ft / 7.75 m, 24.61 ft / 7.50 m
- Aft deck: 20.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Quarter deck: 15.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Average freeboard: 22.28 ft / 6.79 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 99.5 %
- Above water (accommodation/working, high = better): 184.3 %
Waterplane Area: 35,082 Square feet or 3,259 Square metres
Displacement factor (Displacement / loading): 113 %
Structure weight / hull surface area: 130 lbs/sq ft or 635 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.29
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Misc Distribution
-Below Water (200t)
--100t Additional Pumps
--70t Additional Damage Control Equipment
--30t Improved Food & Drink storage
--5t Construction Reserve
-Above Water (200t)
-Above Water (200t)
--40t Improved Officer Accommodations
--40t Improved Crew Accommodations
--70t Additional Damage Control Equipment
--20t Enhanced Ventilation and Crew Comfort
--25t Long Range Wireless
--5t Construction Reserve
-On Deck (200t)
--120t 1918 Fire Control
--30t Armed Recon Floatplane
--5t Additional Aviation Stores
--25t Flag Facilities
--20t Enhanced Ventilation and Crew Comfort
-Above Deck (50t)
--15t Additional Optical Spotting Equipment
--20t Night Fighting Equipment
--15t Improved Signaling Equipment
Updating ASC-26's MISC weight, as it has some carryover from GPC-21 which needs to be cleaned up.
QuoteASC-26, Imperial Roman Aviation Scout Cruiser laid down 1926
Displacement:
11,100 t light; 11,550 t standard; 13,030 t normal; 14,214 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(639.76 ft / 623.35 ft) x 63.98 ft x (21.33 / 22.83 ft)
(195.00 m / 190.00 m) x 19.50 m x (6.50 / 6.96 m)
Armament:
8 - 7.09" / 180 mm 50.0 cal guns - 187.39lbs / 85.00kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1915 Model
4 x 2-gun mounts on centreline, forward evenly spread
1 raised mount
4 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 150 per gun
Breech loading guns in deck and hoist mounts, 1909 Model
2 x Twin mounts on sides, forward deck aft
4 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
2 x Single mounts on sides, forward deck aft
2 raised mounts
2 x Single mounts on sides, aft deck forward
2 double raised mounts
12 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
2 x Quad mounts on sides, forward deck aft
2 raised mounts
1 x Quad mount on centreline, forward deck aft
1 double raised mount
Weight of broadside 1,936 lbs / 878 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 425.98 ft / 129.84 m 16.40 ft / 5.00 m
Ends: Unarmoured
Main Belt covers 105 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.36" / 60 mm 1.18" / 30 mm 2.36" / 60 mm
2nd: 0.98" / 25 mm 0.59" / 15 mm 1.97" / 50 mm
3rd: 0.20" / 5 mm - 0.59" / 15 mm
4th: - - 0.59" / 15 mm
- Armoured deck - single deck:
For and Aft decks: 1.38" / 35 mm
Forecastle: 0.00" / 0 mm Quarter deck: 1.38" / 35 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 110,000 shp / 82,060 Kw = 32.81 kts
Range 11,000nm at 14.00 kts
Bunker at max displacement = 2,663 tons
Complement:
609 - 792
Cost:
£3.775 million / $15.101 million
Distribution of weights at normal displacement:
Armament: 601 tons, 4.6 %
- Guns: 601 tons, 4.6 %
Armour: 1,780 tons, 13.7 %
- Belts: 900 tons, 6.9 %
- Armament: 236 tons, 1.8 %
- Armour Deck: 644 tons, 4.9 %
Machinery: 3,521 tons, 27.0 %
Hull, fittings & equipment: 4,588 tons, 35.2 %
Fuel, ammunition & stores: 1,930 tons, 14.8 %
Miscellaneous weights: 610 tons, 4.7 %
- Hull below water: 100 tons
- Hull above water: 150 tons
- On freeboard deck: 335 tons
- Above deck: 25 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
15,589 lbs / 7,071 Kg = 87.6 x 7.1 " / 180 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 3.7 ft / 1.1 m
Roll period: 13.9 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.40
Seaboat quality (Average = 1.00): 1.22
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.536 / 0.546
Length to Beam Ratio: 9.74 : 1
'Natural speed' for length: 24.97 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 41
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 27.07 ft / 8.25 m, 25.43 ft / 7.75 m
- Forward deck: 50.00 %, 25.43 ft / 7.75 m, 25.43 ft / 7.75 m
- Aft deck: 18.34 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Quarter deck: 11.66 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Average freeboard: 22.85 ft / 6.96 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 105.1 %
- Above water (accommodation/working, high = better): 197.7 %
Waterplane Area: 27,480 Square feet or 2,553 Square metres
Displacement factor (Displacement / loading): 114 %
Structure weight / hull surface area: 108 lbs/sq ft or 529 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.63
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Good seaboat, rides out heavy weather easily
Misc Weight Distribution
-Below Water (100t)
--30t Additional Pumps
--30t Additional Damage Control Equipment
--30t Additional Aviation consumable stores
--10t Improved Food & Drink storage
-Above Water (150t)
--30t Additional Damage Control Equipment
--20t Enhanced Ventilation and Crew Comfort
--50t Long Range Wireless
--50t Aviation Support Facilites (eg pilots ready room, hanger ventilation)
-On Deck (335t)
--50t 1918 Fire Control
--80t 8x610mm Torpedo Tubes (2x4 mounts Aft Deck Forward + 1 Reload per side)
--25t Enhanced Ventilation and Crew Comfort
--10t Short Range Wireless
--150t Six Armed Floatplanes
--15t 3x Catapults (one on each side aft deck, one on fantail)
--5t Construction Reserve
-Above Deck (25t)
--10t Additional Optical Spotting Equipment
--10t Night Fighting Equipment
--5t Improved Signaling Equipment
Minor changes to LBS-26.
Quote
LBS-26, Imperial Roman Republic Fast Battleship laid down 1926
Displacement:
46,000 t light; 48,319 t standard; 50,927 t normal; 53,014 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(869.41 ft / 853.02 ft) x 104.99 ft x (31.17 / 32.24 ft)
(265.00 m / 260.00 m) x 32.00 m x (9.50 / 9.83 m)
Armament:
8 - 16.14" / 410 mm 45.0 cal guns - 2,120.85lbs / 962.00kg shells, 110 per gun
Breech loading guns in turret on barbette mounts, 1915 Model
4 x 2-gun mounts on centreline ends, evenly spread
2 raised mounts - superfiring
20 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 200 per gun
Quick firing guns in deck and hoist mounts, 1909 Model
10 x Twin mounts on sides, evenly spread
4 raised mounts
8 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
8 x Single mounts on sides, evenly spread
8 raised mounts
24 - 1.10" / 28.0 mm 55.0 cal guns - 0.73lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
6 x Quad mounts on sides, evenly spread
6 raised mounts
10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.00kg shells, 15,000 per gun
Machine guns in deck mounts, 1925 Model
10 x Single mounts on sides, evenly spread
10 raised mounts
Weight of broadside 18,871 lbs / 8,560 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.4" / 340 mm 513.35 ft / 156.47 m 18.68 ft / 5.69 m
Ends: 1.97" / 50 mm 339.67 ft / 103.53 m 13.12 ft / 4.00 m
Main Belt covers 93 % of normal length
Main Belt inclined 15.00 degrees (positive = in)
- Torpedo Bulkhead - Additional damage containing bulkheads:
2.56" / 65 mm 513.35 ft / 156.47 m 34.45 ft / 10.50 m
Beam between torpedo bulkheads 84.32 ft / 25.70 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 17.3" / 440 mm 7.09" / 180 mm 11.8" / 300 mm
2nd: 1.97" / 50 mm 0.59" / 15 mm 3.94" / 100 mm
3rd: 0.20" / 5 mm - 0.98" / 25 mm
4th: 0.20" / 5 mm - 0.59" / 15 mm
5th: 0.20" / 5 mm - -
- Armoured deck - multiple decks:
For and Aft decks: 4.53" / 115 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 13.39" / 340 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 180,000 shp / 134,280 Kw = 30.47 kts
Range 8,000nm at 14.00 kts
Bunker at max displacement = 4,695 tons
Complement:
1,694 - 2,203
Cost:
£14.618 million / $58.473 million
Distribution of weights at normal displacement:
Armament: 3,884 tons, 7.6 %
- Guns: 3,884 tons, 7.6 %
Armour: 16,066 tons, 31.5 %
- Belts: 5,852 tons, 11.5 %
- Torpedo bulkhead: 1,674 tons, 3.3 %
- Armament: 3,316 tons, 6.5 %
- Armour Deck: 4,828 tons, 9.5 %
- Conning Tower: 396 tons, 0.8 %
Machinery: 5,762 tons, 11.3 %
Hull, fittings & equipment: 17,377 tons, 34.1 %
Fuel, ammunition & stores: 4,927 tons, 9.7 %
Miscellaneous weights: 2,910 tons, 5.7 %
- Hull below water: 1,900 tons
- Hull above water: 235 tons
- On freeboard deck: 675 tons
- Above deck: 100 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
70,216 lbs / 31,850 Kg = 33.4 x 16.1 " / 410 mm shells or 10.2 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 7.0 ft / 2.1 m
Roll period: 16.6 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.70
Seaboat quality (Average = 1.00): 1.09
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.639 / 0.643
Length to Beam Ratio: 8.13 : 1
'Natural speed' for length: 29.21 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 46
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 5.64 ft / 1.72 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.82 %, 29.53 ft / 9.00 m, 27.07 ft / 8.25 m
- Forward deck: 40.00 %, 27.07 ft / 8.25 m, 27.07 ft / 8.25 m
- Aft deck: 20.18 %, 18.04 ft / 5.50 m, 18.04 ft / 5.50 m
- Quarter deck: 19.00 %, 18.04 ft / 5.50 m, 18.04 ft / 5.50 m
- Average freeboard: 23.74 ft / 7.24 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 92.5 %
- Above water (accommodation/working, high = better): 183.5 %
Waterplane Area: 67,888 Square feet or 6,307 Square metres
Displacement factor (Displacement / loading): 107 %
Structure weight / hull surface area: 203 lbs/sq ft or 991 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.01
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Misc Weight Distribution
-Below Water (1900t)
--1445t Electric Drives
--200t Additional Pumps
--200t Additional Damage Control Equipment
--50t Improved Food & Drink storage
-Above Water (235t)
--40t Improved Officer Accommodations
--40t Improved Crew Accommodations
--70t Additional Damage Control Equipment
--20t Enhanced Ventilation and Crew Comfort
--50t Long Range Wireless (2x)
--10t Construction Reserve
-On Deck (675t)
--405t 1918 Fire Control
--50t Aviation Facilities (2x Recon Plane & 2x Catapults)
--50t Flag Facilities
--50t Enhanced Ventilation and Crew Comfort
--80t Power Train Assist for 140mm guns
--10t Short Range Wireless
--10t Construction Reserve
-Above Deck (100t)
--15t Additional Optical Spotting Equipment
--70t Night Fighting Equipment
--15t Improved Signaling Equipment
Your secondary needs twin or 2-gun mounts.
Definitely a badass.
Quote from: The Rock Doctor on June 13, 2023, 07:31:34 PM
Your secondary needs twin or 2-gun mounts.
Definitely a badass.
Thanks for the catch, updated.
Somewhere, in some design office, a plan is floated. A plan to provide the fleet with a truly mobile airfield with which to cover the fleet from aerial reconnaissance.
QuoteTotally Not Saratoga, Imperial Roman Large Aircraft Carrier laid down 1926
Displacement:
43,739 t light; 44,859 t standard; 47,927 t normal; 50,381 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(869.41 ft / 853.02 ft) x 104.99 ft x (31.17 / 32.48 ft)
(265.00 m / 260.00 m) x 32.00 m x (9.50 / 9.90 m)
Armament:
8 - 7.09" / 180 mm 50.0 cal guns - 187.39lbs / 85.00kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1915 Model
2 x 2-gun mounts on sides amidships
2 raised mounts
2 x 2-gun mounts on sides amidships
2 double raised mounts
12 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
12 x Single mounts on sides, evenly spread
24 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 150 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
6 x Quad mounts on sides, evenly spread
Weight of broadside 1,768 lbs / 802 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.50" / 165 mm 554.46 ft / 169.00 m 18.04 ft / 5.50 m
Ends: 1.97" / 50 mm 298.52 ft / 90.99 m 12.30 ft / 3.75 m
Main Belt covers 100 % of normal length
- Torpedo Bulkhead - Additional damage containing bulkheads:
2.56" / 65 mm 554.46 ft / 169.00 m 34.45 ft / 10.50 m
Beam between torpedo bulkheads 84.32 ft / 25.70 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.36" / 60 mm 1.18" / 30 mm 2.36" / 60 mm
2nd: 0.20" / 5 mm - 0.59" / 15 mm
3rd: 0.20" / 5 mm - 0.59" / 15 mm
- Armoured deck - multiple decks:
For and Aft decks: 2.95" / 75 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 180,000 shp / 134,280 Kw = 30.88 kts
Range 10,000nm at 14.00 kts
Bunker at max displacement = 5,522 tons
Complement:
1,619 - 2,105
Cost:
£8.738 million / $34.950 million
Distribution of weights at normal displacement:
Armament: 569 tons, 1.2 %
- Guns: 569 tons, 1.2 %
Armour: 8,449 tons, 17.6 %
- Belts: 3,016 tons, 6.3 %
- Torpedo bulkhead: 1,809 tons, 3.8 %
- Armament: 373 tons, 0.8 %
- Armour Deck: 3,251 tons, 6.8 %
Machinery: 5,762 tons, 12.0 %
Hull, fittings & equipment: 15,274 tons, 31.9 %
Fuel, ammunition & stores: 4,188 tons, 8.7 %
Miscellaneous weights: 13,685 tons, 28.6 %
- Hull below water: 7,315 tons
- Hull above water: 6,000 tons
- On freeboard deck: 300 tons
- Above deck: 70 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
97,014 lbs / 44,005 Kg = 545.2 x 7.1 " / 180 mm shells or 12.8 torpedoes
Stability (Unstable if below 1.00): 1.38
Metacentric height 9.5 ft / 2.9 m
Roll period: 14.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.11
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has a flush deck,
a normal bow and a round stern
Block coefficient (normal/deep): 0.601 / 0.606
Length to Beam Ratio: 8.13 : 1
'Natural speed' for length: 29.21 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 2.07 ft / 0.63 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 39.37 ft / 12.00 m, 39.37 ft / 12.00 m
- Forward deck: 30.00 %, 39.37 ft / 12.00 m, 39.37 ft / 12.00 m
- Aft deck: 35.00 %, 39.37 ft / 12.00 m, 39.37 ft / 12.00 m
- Quarter deck: 15.00 %, 39.37 ft / 12.00 m, 39.37 ft / 12.00 m
- Average freeboard: 39.37 ft / 12.00 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 91.7 %
- Above water (accommodation/working, high = better): 303.7 %
Waterplane Area: 65,558 Square feet or 6,091 Square metres
Displacement factor (Displacement / loading): 135 %
Structure weight / hull surface area: 146 lbs/sq ft or 711 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 2.07
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Airgroup of 110 post-1933 Aircraft
Saratoga, toga, toga!
Proposed refit for the incredibly old Caicos-vet E-Class Destroyers. The surviving two have been plying around the Amazon delta and are very much overdue for a refit. Attempt at getting as close to GFD-26 armament as practical.
QuoteE-Class (1926 Refit), Imperial Roman Republic Destroyer laid down 1908
Displacement:
750 t light; 781 t standard; 848 t normal; 902 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(258.98 ft / 252.62 ft) x 26.25 ft x (11.48 / 11.95 ft)
(78.94 m / 77.00 m) x 8.00 m x (3.50 / 3.64 m)
Armament:
2 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 175 per gun
Quick firing guns in deck mount, 1926 Model
1 x Twin mount on centreline, forward deck forward
2 - 2.24" / 57.0 mm 55.0 cal guns - 6.06lbs / 2.75kg shells, 500 per gun
Quick firing guns in deck mount, 1926 Model
1 x Twin mount on centreline, aft deck aft
1 raised mount
4 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 4,000 per gun
Anti-air guns in deck mount, 1926 Model
1 x Single mount on centreline, forward deck aft
1 raised mount
Weight of broadside 57 lbs / 26 kg
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm 0.20" / 5 mm -
2nd: 0.20" / 5 mm - -
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 24,011 shp / 17,912 Kw = 31.28 kts
Range 3,000nm at 10.00 kts
Bunker at max displacement = 121 tons
Complement:
78 - 102
Cost:
£0.099 million / $0.396 million
Distribution of weights at normal displacement:
Armament: 12 tons, 1.4 %
- Guns: 12 tons, 1.4 %
Armour: 2 tons, 0.2 %
- Armament: 2 tons, 0.2 %
Machinery: 494 tons, 58.2 %
Hull, fittings & equipment: 203 tons, 23.9 %
Fuel, ammunition & stores: 98 tons, 11.6 %
Miscellaneous weights: 40 tons, 4.7 %
- On freeboard deck: 40 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
168 lbs / 76 Kg = 7.6 x 3.5 " / 90 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.22
Metacentric height 1.0 ft / 0.3 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 47 %
- Recoil effect (Restricted arc if above 1.00): 0.10
Seaboat quality (Average = 1.00): 0.56
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.390 / 0.398
Length to Beam Ratio: 9.63 : 1
'Natural speed' for length: 15.89 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 78
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 2.40 ft / 0.73 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 14.76 ft / 4.50 m, 14.76 ft / 4.50 m
- Forward deck: 20.00 %, 14.76 ft / 4.50 m, 14.76 ft / 4.50 m
- Aft deck: 45.00 %, 6.56 ft / 2.00 m, 6.56 ft / 2.00 m
- Quarter deck: 15.00 %, 6.56 ft / 2.00 m, 6.56 ft / 2.00 m
- Average freeboard: 9.84 ft / 3.00 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 193.2 %
- Above water (accommodation/working, high = better): 89.9 %
Waterplane Area: 4,053 Square feet or 377 Square metres
Displacement factor (Displacement / loading): 34 %
Structure weight / hull surface area: 27 lbs/sq ft or 134 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.53
- Longitudinal: 1.66
- Overall: 0.60
Cramped machinery, storage, compartmentation space
Cramped accommodation and workspace room
Caution: Lacks seaworthiness - very limited seakeeping ability
Misc Distribution
On Deck (40t)
--15t 3x610mm Torpedoes [Single Tripple Mount Aft Deck Centerline]
--10t Short-Range Wireless
--5t Improved spray protections for Torpedo tubes
--2t 1918 Fire Control
--5t Night fighting Equpment
--3t Construction Reserve.
Refit Cost
--New Guns
---12t
--New Misc
---40t
Total Cost - 52t -> .052 $ & BP
Going fully to torpedo boat here.
Seems reasonable for that quiet assignment.
QuoteSeems reasonable for that quiet assignment.
I agree ;)
Rather than lay down a second armored cruiser in 1928 to make a class of two for the program, there is an alternative proposal to build another aircraft carrier. In effect a stretched Cardinal Richelieu built atop the relative hull form of AC-26, the design can accommodate fifty-seven aircraft [Reduced to forty-eight post-1933, its calculated Airgroup at 4560t] while being fast enough to keep up with the battleships and armored cruisers in a sprint. Its value is seen as providing mobile fighter cover to the battlefleet, rather than as a strike asset.
QuoteFrancis Drake, Imperial Roman Republic Aircraft Carrier laid down 1928
Displacement:
18,700 t light; 19,232 t standard; 21,031 t normal; 22,470 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(705.38 ft / 688.99 ft) x 75.46 ft x (22.97 / 24.27 ft)
(215.00 m / 210.00 m) x 23.00 m x (7.00 / 7.40 m)
Armament:
8 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 175 per gun
Quick firing guns in deck and hoist mounts, 1909 Model
8 x Single mounts on side ends, evenly spread
4 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
2 x Single mounts on sides amidships
2 raised mounts
2 x Single mounts on sides amidships
2 double raised mounts
16 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
4 x Quad mounts on side ends, evenly spread
10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1925 Model
10 x Single mounts on sides, evenly spread
Weight of broadside 783 lbs / 355 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 458.73 ft / 139.82 m 16.40 ft / 5.00 m
Ends: Unarmoured
Main Belt covers 102 % of normal length
- Torpedo Bulkhead - Additional damage containing bulkheads:
1.57" / 40 mm 458.73 ft / 139.82 m 21.82 ft / 6.65 m
Beam between torpedo bulkheads 61.52 ft / 18.75 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 1.97" / 50 mm
2nd: 0.20" / 5 mm 0.20" / 5 mm 0.59" / 15 mm
3rd: 0.20" / 5 mm - 0.59" / 15 mm
4th: 0.20" / 5 mm - -
- Armoured deck - multiple decks:
For and Aft decks: 1.97" / 50 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 3.15" / 80 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 110,000 shp / 82,060 Kw = 30.44 kts
Range 10,000nm at 14.00 kts
Bunker at max displacement = 3,238 tons
Complement:
873 - 1,135
Cost:
£4.698 million / $18.793 million
Distribution of weights at normal displacement:
Armament: 272 tons, 1.3 %
- Guns: 272 tons, 1.3 %
Armour: 3,015 tons, 14.3 %
- Belts: 986 tons, 4.7 %
- Torpedo bulkhead: 583 tons, 2.8 %
- Armament: 54 tons, 0.3 %
- Armour Deck: 1,341 tons, 6.4 %
- Conning Tower: 52 tons, 0.2 %
Machinery: 3,425 tons, 16.3 %
Hull, fittings & equipment: 6,778 tons, 32.2 %
Fuel, ammunition & stores: 2,331 tons, 11.1 %
Miscellaneous weights: 5,210 tons, 24.8 %
- Hull below water: 2,480 tons
- Hull above water: 2,480 tons
- On freeboard deck: 200 tons
- Above deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
37,089 lbs / 16,823 Kg = 443.0 x 5.5 " / 140 mm shells or 4.3 torpedoes
Stability (Unstable if below 1.00): 1.33
Metacentric height 5.5 ft / 1.7 m
Roll period: 13.6 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.11
Seaboat quality (Average = 1.00): 1.96
Hull form characteristics:
Hull has a flush deck,
a normal bow and a round stern
Block coefficient (normal/deep): 0.616 / 0.623
Length to Beam Ratio: 9.13 : 1
'Natural speed' for length: 26.25 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 36
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 5.64 ft / 1.72 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 16.71 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
- Forward deck: 30.00 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
- Aft deck: 36.58 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
- Quarter deck: 16.71 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
- Average freeboard: 29.53 ft / 9.00 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 102.4 %
- Above water (accommodation/working, high = better): 248.8 %
Waterplane Area: 38,614 Square feet or 3,587 Square metres
Displacement factor (Displacement / loading): 131 %
Structure weight / hull surface area: 107 lbs/sq ft or 522 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.93
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
I can see why Rome might be tempted to go with something like that.
Just 9 m above the sea. This may be a little low for a 215m and 18700t AC.
I've understood the 9m to be the hanger floor, meaning the flight deck level is another 5.5 metres above that...
I get it. 9m is a bit low on the freeboard. But it would account for the hangar and flight deck. In service the ship might find the flight deck to get wet in a head sea.
So yes, for a single hanger carrier we use 9m.
Carriers are like destroyers...the darned things don't sim well. :)
So that isn't meant to be the "reality' necessarily.
The 9m and 12m heights on carriers are meant to sim the superstructure material involved in the hanger, the elevators, etc.
Using those numbers seemed to make the ships sim out similar to the historic ones.
But obviously the 3m height difference between the 9m single and 12m double isn't enough to fit another hanger level.
I suspect in "reality" we should be looking at the real hanger heights being about +3m/hanger level or about 6m.
So about 6m hangers at 12m and then 18m.
Maybe even a 2.5m deck in between the upper hanger and the flight deck. So 14.5 and 20.5m.
Looking at some upcoming refits, the Pilum class destroyers (https://www.navalism.org/index.php/topic,7576.0.html) seem to be a good testbed for the upcoming 90mm DP mounts. They receive a complete armament refresh, as well as reallocation of miscellaneous weight. Also preview of a designation change that I'll post when its fully baked.
QuotePilum (1930 Refit), Imperial Roman Heavy Corvette laid down 1914
Displacement:
1,492 t light; 1,567 t standard; 1,760 t normal; 1,914 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(354.32 ft / 344.49 ft) x 31.17 ft x (13.94 / 14.75 ft)
(108.00 m / 105.00 m) x 9.50 m x (4.25 / 4.50 m)
Armament:
8 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 330 per gun
Dual purpose guns in deck mounts, 1926 Model
3 x Twin mounts on centreline ends, majority forward
1 raised mount - superfiring
1 x Twin mount on centreline, aft deck forward
1 raised mount aft
8 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 3,000 per gun
Anti-air guns in deck mounts, 1926 Model
2 x Quad mounts on sides, aft deck forward
2 raised mounts
4 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 5,000 per gun
Machine guns in deck mounts, 1925 Model
4 x Single mounts on sides, evenly spread
4 raised mounts
Weight of broadside 173 lbs / 79 kg
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm 0.20" / 5 mm -
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 36,000 shp / 26,856 Kw = 32.26 kts
Range 3,500nm at 14.00 kts
Bunker at max displacement = 347 tons
Complement:
135 - 176
Cost:
£0.258 million / $1.031 million
Distribution of weights at normal displacement:
Armament: 36 tons, 2.1 %
- Guns: 36 tons, 2.1 %
Armour: 5 tons, 0.3 %
- Armament: 5 tons, 0.3 %
Machinery: 996 tons, 56.6 %
Hull, fittings & equipment: 404 tons, 23.0 %
Fuel, ammunition & stores: 268 tons, 15.2 %
Miscellaneous weights: 50 tons, 2.8 %
- On freeboard deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
379 lbs / 172 Kg = 17.1 x 3.5 " / 90 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.32
Metacentric height 1.4 ft / 0.4 m
Roll period: 11.0 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.22
Seaboat quality (Average = 1.00): 1.11
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.411 / 0.423
Length to Beam Ratio: 11.05 : 1
'Natural speed' for length: 18.56 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 64
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 2.07 ft / 0.63 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 10.00 %, 21.33 ft / 6.50 m, 19.69 ft / 6.00 m
- Forward deck: 15.00 %, 19.69 ft / 6.00 m, 19.69 ft / 6.00 m
- Aft deck: 60.00 %, 11.48 ft / 3.50 m, 11.48 ft / 3.50 m
- Quarter deck: 15.00 %, 11.48 ft / 3.50 m, 11.48 ft / 3.50 m
- Average freeboard: 13.60 ft / 4.15 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 190.2 %
- Above water (accommodation/working, high = better): 123.2 %
Waterplane Area: 6,655 Square feet or 618 Square metres
Displacement factor (Displacement / loading): 60 %
Structure weight / hull surface area: 30 lbs/sq ft or 148 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.74
- Overall: 0.56
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
50t On Deck
--10t Short Range Wireless
--20t 4x610mm (1918) Torpedo Tubes (1x4 mount cenerline)
--4t 1918 Fire Control
--10t Nightfighting Equipment
--5t Basic Hydrophone
--1t 3x280kg Depth Charges
Cost: .09 $ and BP
The Isca class cruisers (https://www.navalism.org/index.php/topic,7799.0.html) are due for an Anti-Aircraft battery refresh. This refit replaces the torpedoes and old 100mm guns with a modern battery of 57mm and 28mm guns. Due to the extremely tight build of these ships, they are unable to carry the same ammunition loads as more modern ships. The refit also adds a single catapult with accompanying armed recon plane.
QuoteGPC-17 (1927 Refit), Imperial Roman Republic Cruiser laid down 1917
Displacement:
7,994 t light; 8,287 t standard; 9,332 t normal; 10,168 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(554.46 ft / 541.34 ft) x 57.41 ft x (19.69 / 21.05 ft)
(169.00 m / 165.00 m) x 17.50 m x (6.00 / 6.42 m)
Armament:
6 - 7.09" / 180 mm 50.0 cal guns - 187.39lbs / 85.00kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1915 Model
3 x 2-gun mounts on centreline ends, majority forward
1 raised mount - superfiring
6 - 2.24" / 57.0 mm 43.0 cal guns - 5.52lbs / 2.50kg shells, 250 per gun
Anti-air guns in deck mounts, 1926 Model
6 x Single mounts on sides, aft evenly spread
6 raised mounts
8 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 2,400 per gun
Anti-air guns in deck mounts, 1926 Model
2 x Quad mounts on sides, forward deck centre
2 raised mounts
8 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 10,000 per gun
Machine guns in deck mounts, 1917 Model
8 x Single mounts on sides, evenly spread
Weight of broadside 1,163 lbs / 528 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 396.69 ft / 120.91 m 16.40 ft / 5.00 m
Ends: Unarmoured
Main Belt covers 113 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.36" / 60 mm 1.18" / 30 mm 2.36" / 60 mm
2nd: 0.20" / 5 mm - -
- Armoured deck - single deck:
For and Aft decks: 1.18" / 30 mm
Forecastle: 0.00" / 0 mm Quarter deck: 1.18" / 30 mm
- Conning towers: Forward 3.94" / 100 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 78,000 shp / 58,188 Kw = 31.23 kts
Range 8,050nm at 14.00 kts
Bunker at max displacement = 1,881 tons
Complement:
474 - 617
Cost:
£1.456 million / $5.822 million
Distribution of weights at normal displacement:
Armament: 363 tons, 3.9 %
- Guns: 363 tons, 3.9 %
Armour: 1,463 tons, 15.7 %
- Belts: 829 tons, 8.9 %
- Armament: 158 tons, 1.7 %
- Armour Deck: 439 tons, 4.7 %
- Conning Tower: 38 tons, 0.4 %
Machinery: 2,859 tons, 30.6 %
Hull, fittings & equipment: 3,118 tons, 33.4 %
Fuel, ammunition & stores: 1,338 tons, 14.3 %
Miscellaneous weights: 190 tons, 2.0 %
- Hull below water: 70 tons
- Hull above water: 30 tons
- On freeboard deck: 70 tons
- Above deck: 20 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
9,206 lbs / 4,176 Kg = 51.7 x 7.1 " / 180 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.26
Metacentric height 3.3 ft / 1.0 m
Roll period: 13.3 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.30
Seaboat quality (Average = 1.00): 1.07
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.534 / 0.544
Length to Beam Ratio: 9.43 : 1
'Natural speed' for length: 23.27 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.87 ft / 1.18 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 16.72 %, 25.43 ft / 7.75 m, 25.43 ft / 7.75 m
- Forward deck: 20.00 %, 25.43 ft / 7.75 m, 25.43 ft / 7.75 m
- Aft deck: 53.28 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Quarter deck: 10.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Average freeboard: 19.72 ft / 6.01 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 112.7 %
- Above water (accommodation/working, high = better): 162.0 %
Waterplane Area: 21,369 Square feet or 1,985 Square metres
Displacement factor (Displacement / loading): 110 %
Structure weight / hull surface area: 96 lbs/sq ft or 468 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.53
- Overall: 1.00
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
Misc Distribution
--Below Water (70t)
----30t Additional Pumps
----30t Improved Damage Control
----10t Additional Stores
--Above Water (30t)
----5t Improved Officer Accommodations
----25t Long Range Wireless
--On Deck (70t)
----37t 1918 Fire Control
----25t Armed Recon Floatplane
----5t Catapult
----8t Construction Reserve
--Above Deck (20t)
----15t Night Fighting Equipment
----5t Improved Signaling Equipment
Cost: .071 $ and BP per ship
9t new guns
62t On Deck Misc weight
71t total
Planning for an then paying for my fleet Fire Control and AA refits has been...annoying.
But it pays off.
Next on the refit block is the Thibault D'Aramitz class. These older cruisers also undergo replacement of the torpedoes and secondary guns with a modern AA battery and floatplane. Additionally, the Flag facilities are expanded at the expense of the Marine accommodations.
QuoteThibault D'Aramitz (1927 Refit), Imperial Roman Republic Cruiser laid down 1913
Displacement:
8,470 t light; 8,791 t standard; 9,904 t normal; 10,795 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(617.69 ft / 606.96 ft) x 65.62 ft x (19.69 / 20.92 ft)
(188.27 m / 185.00 m) x 20.00 m x (6.00 / 6.38 m)
Armament:
8 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 210 per gun
Quick firing guns in deck and hoist mounts, 1909 Model
4 x Twin mounts on centreline ends, evenly spread
2 raised mounts - superfiring
6 - 2.24" / 57.0 mm 43.0 cal guns - 5.52lbs / 2.50kg shells, 500 per gun
Anti-air guns in deck mounts, 1926 Model
6 x Single mounts on sides, evenly spread
16 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck mounts, 1926 Model
4 x Quad mounts on sides, evenly spread
4 raised mounts
8 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1917 Model
8 x Single mounts on sides, evenly spread
4 raised mounts
Weight of broadside 733 lbs / 332 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.97" / 50 mm 394.52 ft / 120.25 m 9.84 ft / 3.00 m
Ends: 1.18" / 30 mm 212.40 ft / 64.74 m 9.84 ft / 3.00 m
Main Belt covers 100 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.20" / 5 mm 0.98" / 25 mm
2nd: 0.20" / 5 mm - -
- Protected deck - single deck:
For and Aft decks: 2.36" / 60 mm
Forecastle: 1.18" / 30 mm Quarter deck: 1.18" / 30 mm
- Conning towers: Forward 3.54" / 90 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 64,000 shp / 47,744 Kw = 30.10 kts
Range 7,000nm at 14.00 kts
Bunker at max displacement = 2,004 tons
Complement:
496 - 645
Cost:
£0.801 million / $3.204 million
Distribution of weights at normal displacement:
Armament: 201 tons, 2.0 %
- Guns: 201 tons, 2.0 %
Armour: 1,463 tons, 14.8 %
- Belts: 405 tons, 4.1 %
- Armament: 15 tons, 0.1 %
- Armour Deck: 1,008 tons, 10.2 %
- Conning Tower: 35 tons, 0.4 %
Machinery: 2,508 tons, 25.3 %
Hull, fittings & equipment: 3,413 tons, 34.5 %
Fuel, ammunition & stores: 1,434 tons, 14.5 %
Miscellaneous weights: 885 tons, 8.9 %
- Hull below water: 640 tons
- Hull above water: 50 tons
- On freeboard deck: 180 tons
- Above deck: 15 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
12,946 lbs / 5,872 Kg = 154.6 x 5.5 " / 140 mm shells or 1.7 torpedoes
Stability (Unstable if below 1.00): 1.39
Metacentric height 4.8 ft / 1.4 m
Roll period: 12.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.12
Seaboat quality (Average = 1.00): 1.23
Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.442 / 0.453
Length to Beam Ratio: 9.25 : 1
'Natural speed' for length: 24.64 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 57
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.87 ft / 1.18 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 18.86 ft / 5.75 m, 16.40 ft / 5.00 m
- Forward deck: 30.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Aft deck: 35.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Quarter deck: 15.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Average freeboard: 16.60 ft / 5.06 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 98.8 %
- Above water (accommodation/working, high = better): 159.0 %
Waterplane Area: 25,241 Square feet or 2,345 Square metres
Displacement factor (Displacement / loading): 121 %
Structure weight / hull surface area: 94 lbs/sq ft or 461 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.02
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Misc Distribution
--Below Water (640t)
----627t Electric Drives
----10t Additional Pumps
----3t Construction Reserve
--Above Water (50t)
----15t Improved Crew Accommodations
----25t Improved Officer Accommodations
----10t Short Range Wireless
--On Deck (200t)
----21t 1918 Fire Control
----25t Armed Recon Floatplane
----5t Catapult
----25t Long Range Wireless
----50t Additional Stores
----20t Admiralty Accommodations
----30t Flag Facilities
----4t Construction Reserve
--Above Deck (15t)
----10t Improved Acquisition Structures
----5t Additional Searchlights
Cost: .055 Cash and BP.
--44t New Misc Weight
--11t New Armament
And now for more Destroyers. The Rainier Marion's are the oldest "modern" destroyers and the genisis of the current line of Heavy Destroyers. While the reclassification is going to alter how they are described, they are in need of an update. This sees the replacement of the long 140mmL55 with the L40 version found on more modern examples. Additionally, they receive additional AA guns, and a quadruple 610mm torpedo launcher in place of the old 530mm fish.
QuoteRainier Marion (1927 Refit), Imperial Roman Destroyer laid down 1916
Displacement:
1,494 t light; 1,560 t standard; 1,802 t normal; 1,996 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(347.76 ft / 344.49 ft) x 32.81 ft x (11.48 / 12.39 ft)
(106.00 m / 105.00 m) x 10.00 m x (3.50 / 3.78 m)
Armament:
4 - 5.51" / 140 mm 40.0 cal guns - 85.98lbs / 39.00kg shells, 125 per gun
Quick firing guns in deck mounts, 1917 Model
4 x Single mounts on centreline ends, evenly spread
2 raised mounts - superfiring
4 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 3,250 per gun
Anti-air guns in deck mount, 1926 Model
1 x Quad mount on centreline, aft deck centre
1 raised mount
8 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1916 Model
8 x Single mounts on sides, evenly spread
6 raised mounts
Weight of broadside 347 lbs / 157 kg
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm 0.20" / 5 mm -
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 32,000 shp / 23,872 Kw = 30.89 kts
Range 4,780nm at 14.00 kts
Bunker at max displacement = 436 tons
Complement:
137 - 179
Cost:
£0.326 million / $1.302 million
Distribution of weights at normal displacement:
Armament: 50 tons, 2.8 %
- Guns: 50 tons, 2.8 %
Armour: 6 tons, 0.4 %
- Armament: 6 tons, 0.4 %
Machinery: 948 tons, 52.6 %
Hull, fittings & equipment: 433 tons, 24.1 %
Fuel, ammunition & stores: 308 tons, 17.1 %
Miscellaneous weights: 56 tons, 3.1 %
- On freeboard deck: 56 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
505 lbs / 229 Kg = 6.0 x 5.5 " / 140 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.32
Metacentric height 1.5 ft / 0.5 m
Roll period: 11.1 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.41
Seaboat quality (Average = 1.00): 1.16
Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.486 / 0.499
Length to Beam Ratio: 10.50 : 1
'Natural speed' for length: 18.56 kts
Power going to wave formation at top speed: 66 %
Trim (Max stability = 0, Max steadiness = 100): 61
Bow angle (Positive = bow angles forward): 12.50 degrees
Stern overhang: -4.92 ft / -1.50 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 14.76 ft / 4.50 m, 14.76 ft / 4.50 m
- Forward deck: 30.00 %, 14.76 ft / 4.50 m, 14.76 ft / 4.50 m
- Aft deck: 35.00 %, 14.76 ft / 4.50 m, 14.76 ft / 4.50 m
- Quarter deck: 15.00 %, 14.76 ft / 4.50 m, 14.76 ft / 4.50 m
- Average freeboard: 14.76 ft / 4.50 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 178.0 %
- Above water (accommodation/working, high = better): 152.6 %
Waterplane Area: 7,436 Square feet or 691 Square metres
Displacement factor (Displacement / loading): 70 %
Structure weight / hull surface area: 31 lbs/sq ft or 153 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.81
- Overall: 0.56
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Misc Wieght (56t)
--20t 4x610mm (1918) Torpedo Tubes (1x4 mount cenerline)
--8t 1918 FC
--25t LR Wireless
--3t Night Fighting Equipment
Cost: .07 Cash and BP.
--20t for Torpedoes
--50t for guns
Hopefully the final design for Aviation Frigate 1928. Grew a little bit from the prelim, expanded scope of armor protection.
QuoteAF-28, Imperial Roman Republic Aviation Frigate laid down 1928
Displacement:
19,000 t light; 19,539 t standard; 21,356 t normal; 22,810 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(705.37 ft / 688.98 ft) x 75.46 ft x (22.97 / 24.27 ft)
(215.00 m / 210.00 m) x 23.00 m x (7.00 / 7.40 m)
Armament:
8 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 175 per gun
Quick firing guns in deck and hoist mounts, 1909 Model
8 x Single mounts on side ends, evenly spread
4 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
2 x Single mounts on sides amidships
2 raised mounts
2 x Single mounts on sides amidships
2 double raised mounts
16 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck mounts, 1926 Model
4 x Quad mounts on side ends, evenly spread
10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1925 Model
10 x Single mounts on sides, evenly spread
Weight of broadside 783 lbs / 355 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 458.73 ft / 139.82 m 18.04 ft / 5.50 m
Ends: Unarmoured
Main Belt covers 102 % of normal length
- Torpedo Bulkhead - Additional damage containing bulkheads:
1.97" / 50 mm 458.73 ft / 139.82 m 29.53 ft / 9.00 m
Beam between torpedo bulkheads 61.52 ft / 18.75 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 1.97" / 50 mm
2nd: 0.20" / 5 mm 0.20" / 5 mm 0.59" / 15 mm
- Armoured deck - multiple decks:
For and Aft decks: 1.97" / 50 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 3.15" / 80 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 110,000 shp / 82,060 Kw = 30.34 kts
Range 10,000nm at 14.00 kts
Bunker at max displacement = 3,271 tons
Complement:
883 - 1,148
Cost:
£4.734 million / $18.936 million
Distribution of weights at normal displacement:
Armament: 270 tons, 1.3 %
- Guns: 270 tons, 1.3 %
Armour: 3,523 tons, 16.5 %
- Belts: 1,085 tons, 5.1 %
- Torpedo bulkhead: 987 tons, 4.6 %
- Armament: 47 tons, 0.2 %
- Armour Deck: 1,352 tons, 6.3 %
- Conning Tower: 52 tons, 0.2 %
Machinery: 3,425 tons, 16.0 %
Hull, fittings & equipment: 6,802 tons, 31.8 %
Fuel, ammunition & stores: 2,356 tons, 11.0 %
Miscellaneous weights: 4,980 tons, 23.3 %
- Hull below water: 2,400 tons
- Hull above water: 2,400 tons
- On freeboard deck: 130 tons
- Above deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
38,698 lbs / 17,553 Kg = 462.2 x 5.5 " / 140 mm shells or 4.9 torpedoes
Stability (Unstable if below 1.00): 1.35
Metacentric height 5.6 ft / 1.7 m
Roll period: 13.4 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.11
Seaboat quality (Average = 1.00): 1.96
Hull form characteristics:
Hull has a flush deck,
a normal bow and a round stern
Block coefficient (normal/deep): 0.626 / 0.633
Length to Beam Ratio: 9.13 : 1
'Natural speed' for length: 26.25 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 36
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 5.64 ft / 1.72 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 16.71 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
- Forward deck: 30.00 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
- Aft deck: 36.58 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
- Quarter deck: 16.71 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
- Average freeboard: 29.53 ft / 9.00 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 99.8 %
- Above water (accommodation/working, high = better): 248.1 %
Waterplane Area: 38,950 Square feet or 3,619 Square metres
Displacement factor (Displacement / loading): 131 %
Structure weight / hull surface area: 107 lbs/sq ft or 521 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.91
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Airgroup of 57 Planes (Pre 1933 tech)
Misc Weight Distribution
-Below Water (2400t)
--2280t Airgroup
--30t Additional Pumps
--60t Improved Damage Control Equipment
--30t Additional Aviation Stores
-Above Water (2400t)
--2280t Airgroup
--25t LR Wireless
--50t Improved Damage Control Equipment
--30t Enhanced Ventilation and Crew Comfort
--5t Cross Hanger Catapult
--5t Floatplane Recovery Equipment
--5t Construction Reserve
-On Deck (150t)
--27t 1918 Fire Control
--50t Enhanced Ventilation and Crew Comfort
--20t Improved Damage Control Equipment
--10t Short Range Wireless
--10t 2x Catapult (Front End of Flightdeck)
--10t Floatplane Recovery Equipment
--3t Construction Reserve
-Above Deck (50t)
--20t Additional Optical Spotting Equipment
--20t Night Fighting Equipment
--5t Improved Signaling Equipment
--5t Smoke Diversion Equipment
More Refits, this time another battleship. The Totanis class (https://www.navalism.org/index.php/topic,7870.0.html) is being taken in hand for a Secondary Battery Modernization. One of the ships with a combination of 140mm and 100mm guns in a anti-light ships setup, the configuration has been found to be less than reliable due to the sheer amount of shell splashes. Totanis is being taken in hand first as the other classes with this heavy secondary setup are in need of more extensive rebuilds. This refurbishment completely overhauls the secondary battery along the lines of LBS-26; the 140mm guns are now in deck mounts with hoists, the Anti-Aircraft Battery has been brought up to modern standards. The Fire Control System is also replaced wholesale to accommodate the changes.
QuoteTotanis (1927), Imperial Roman Battleship laid down 1916
Displacement:
34,530 t light; 36,579 t standard; 38,910 t normal; 40,775 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(685.71 ft / 672.57 ft) x 101.71 ft x (29.53 / 30.75 ft)
(209.00 m / 205.00 m) x 31.00 m x (9.00 / 9.37 m)
Armament:
8 - 16.14" / 410 mm 45.0 cal guns - 2,120.85lbs / 962.00kg shells, 110 per gun
Breech loading guns in turret on barbette mounts, 1915 Model
4 x 2-gun mounts on centreline ends, evenly spread
2 raised mounts - superfiring
20 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 175 per gun
Quick firing guns in deck and hoist mounts, 1909 Model
6 x Twin mounts on sides, aft evenly spread
4 x Twin mounts on sides, forward evenly spread
6 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
6 x Single mounts on sides, aft evenly spread
6 raised mounts
24 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
6 x Quad mounts on sides, evenly spread
4 raised mounts
10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1925 Model
10 x Single mounts on sides, evenly spread
10 raised mounts
Weight of broadside 18,830 lbs / 8,541 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.6" / 345 mm 437.17 ft / 133.25 m 18.04 ft / 5.50 m
Ends: 1.97" / 50 mm 235.37 ft / 71.74 m 13.12 ft / 4.00 m
Main Belt covers 100 % of normal length
- Torpedo Bulkhead - Additional damage containing bulkheads:
3.15" / 80 mm 437.17 ft / 133.25 m 31.17 ft / 9.50 m
Beam between torpedo bulkheads 82.02 ft / 25.00 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 17.3" / 440 mm 7.09" / 180 mm 11.8" / 300 mm
2nd: 1.97" / 50 mm 0.59" / 15 mm 3.94" / 100 mm
3rd: 0.20" / 5 mm - 0.98" / 25 mm
4th: 0.20" / 5 mm - 0.59" / 15 mm
- Armoured deck - multiple decks:
For and Aft decks: 3.35" / 85 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 13.78" / 350 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 70,000 shp / 52,220 Kw = 24.23 kts
Range 7,000nm at 14.00 kts
Bunker at max displacement = 4,196 tons
Complement:
1,384 - 1,800
Cost:
£5.537 million / $22.147 million
Distribution of weights at normal displacement:
Armament: 3,869 tons, 9.9 %
- Guns: 3,869 tons, 9.9 %
Armour: 13,270 tons, 34.1 %
- Belts: 4,924 tons, 12.7 %
- Torpedo bulkhead: 1,588 tons, 4.1 %
- Armament: 3,444 tons, 8.9 %
- Armour Deck: 2,973 tons, 7.6 %
- Conning Tower: 341 tons, 0.9 %
Machinery: 2,608 tons, 6.7 %
Hull, fittings & equipment: 13,103 tons, 33.7 %
Fuel, ammunition & stores: 4,380 tons, 11.3 %
Miscellaneous weights: 1,680 tons, 4.3 %
- Hull below water: 850 tons
- Hull above water: 150 tons
- On freeboard deck: 630 tons
- Above deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
58,765 lbs / 26,655 Kg = 27.9 x 16.1 " / 410 mm shells or 9.9 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 7.3 ft / 2.2 m
Roll period: 15.8 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.71
Seaboat quality (Average = 1.00): 1.35
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.674 / 0.679
Length to Beam Ratio: 6.61 : 1
'Natural speed' for length: 25.93 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 37
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 5.45 ft / 1.66 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 28.71 ft / 8.75 m, 28.71 ft / 8.75 m
- Forward deck: 15.00 %, 28.71 ft / 8.75 m, 28.71 ft / 8.75 m
- Aft deck: 50.00 %, 19.69 ft / 6.00 m, 19.69 ft / 6.00 m
- Quarter deck: 15.00 %, 19.69 ft / 6.00 m, 19.69 ft / 6.00 m
- Average freeboard: 22.84 ft / 6.96 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 83.6 %
- Above water (accommodation/working, high = better): 160.5 %
Waterplane Area: 53,573 Square feet or 4,977 Square metres
Displacement factor (Displacement / loading): 104 %
Structure weight / hull surface area: 202 lbs/sq ft or 987 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.46
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Good seaboat, rides out heavy weather easily
Misc Weight Distribution
-Below Water (850t)
--652t Electric Drives
--100t Additional Pumps
--40t Additional Damage Control Equipment
--8t Construction Reserve
-Above Water (200t)
--40t Improved Officer Accommodations
--40t Improved Crew Accommodations
--70t Additional Damage Control Equipment
--20t Enhanced Ventilation and Crew Comfort
--20t Short-Range Wireless (x2)
--10t Construction Reserve
-On Deck (630t)
--387t 1918 Fire Control
--35t Flag Facilities
--40t Admiralty Accommodations
--25t Long Range Wireless
--20t Enhanced Ventilation and Crew Comfort
--40t Night Fighting Equipment
--50t Additional Damage Control Equipment
--25t Huelsmeyre Equipment
--8t Construction Reserve
-Above Deck (50t)
--20t Additional Optical Spotting Equipment
--15t Night Fighting Equipment
--15t Improved Signaling Equipment
Main Battery arranged A(B)[SS](X)Y with B superfiring A and X superfiring Y.
Armored deck broken up as 70mm main deck over Fore/Aft with a 15mm splinter deck. End armor is uniform 35mm deck.
Bunker 4196
Cruise Speeds/SpringSharp Range/True Range
10knts/14665nm
14knts/7000nm
20knts/2888nm
24knts/1742nm
Time at Top Speed: 72.58 Hours
Fastest Speed From Brest to Havana (3943nm): 17.743knts for 222.23h transit
Base Cost - $6.9
Armament 527t (.527 BP, $1.054)
Misc Weight 386t New 1918 Fire Control (.386 BP $0.386)
Total Cost - .913 BP and $8.34
The plan is that
Totanis will be refit over 1927, with
Domitor to follow in 1928
Sometime in 1928, Tullius Leofric will be taken in hand for an AA modernization. Functionally just replacement of old model AA guns with current generation.
QuoteTullius Leofric (1928), Imperial Roman Republic Battlecruiser laid down 1917
Displacement:
41,070 t light; 43,027 t standard; 45,874 t normal; 48,151 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(803.79 ft / 787.40 ft) x 108.27 ft x (29.53 / 30.76 ft)
(245.00 m / 240.00 m) x 33.00 m x (9.00 / 9.38 m)
Armament:
12 - 13.39" / 340 mm 45.0 cal guns - 1,212.54lbs / 550.00kg shells, 100 per gun
Breech loading guns in turret on barbette mounts, 1909 Model
2 x Quad mounts on centreline, forward deck forward
1 raised mount - superfiring
1 x Quad mount on centreline, forward deck aft
20 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 200 per gun
Quick firing guns in casemate mounts, 1909 Model
12 x Single mounts on sides, forward evenly spread
8 x Single mounts on sides, aft evenly spread
2 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 294 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
2 x Single mounts on sides, aft deck centre
2 raised mounts
16 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck mounts, 1926 Model
4 x Quad mounts on sides, evenly spread
4 raised mounts
10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1925 Model
10 x Single mounts on sides, evenly spread
6 raised mounts
Weight of broadside 16,324 lbs / 7,404 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.4" / 340 mm 472.11 ft / 143.90 m 18.04 ft / 5.50 m
Ends: 1.97" / 50 mm 315.26 ft / 96.09 m 13.12 ft / 4.00 m
Main Belt covers 92 % of normal length
- Torpedo Bulkhead - Additional damage containing bulkheads:
2.36" / 60 mm 472.11 ft / 143.90 m 31.17 ft / 9.50 m
Beam between torpedo bulkheads 85.30 ft / 26.00 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 16.5" / 420 mm 7.09" / 180 mm 13.4" / 340 mm
2nd: 3.94" / 100 mm 1.97" / 50 mm 3.94" / 100 mm
3rd: 0.20" / 5 mm - 0.98" / 25 mm
- Armoured deck - multiple decks:
For and Aft decks: 3.35" / 85 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 13.39" / 340 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 148,000 shp / 110,408 Kw = 29.13 kts
Range 8,000nm at 14.00 kts
Bunker at max displacement = 5,124 tons
Complement:
1,566 - 2,037
Cost:
£6.658 million / $26.633 million
Distribution of weights at normal displacement:
Armament: 2,898 tons, 6.3 %
- Guns: 2,898 tons, 6.3 %
Armour: 13,736 tons, 29.9 %
- Belts: 5,296 tons, 11.5 %
- Torpedo bulkhead: 1,286 tons, 2.8 %
- Armament: 3,296 tons, 7.2 %
- Armour Deck: 3,489 tons, 7.6 %
- Conning Tower: 370 tons, 0.8 %
Machinery: 5,425 tons, 11.8 %
Hull, fittings & equipment: 16,576 tons, 36.1 %
Fuel, ammunition & stores: 4,804 tons, 10.5 %
Miscellaneous weights: 2,435 tons, 5.3 %
- Hull below water: 1,620 tons
- Hull above water: 150 tons
- On freeboard deck: 615 tons
- Above deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
75,253 lbs / 34,134 Kg = 62.8 x 13.4 " / 340 mm shells or 10.9 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 8.0 ft / 2.4 m
Roll period: 16.1 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.64
Seaboat quality (Average = 1.00): 1.31
Hull form characteristics:
Hull has low quarterdeck ,
a normal bow and a round stern
Block coefficient (normal/deep): 0.638 / 0.643
Length to Beam Ratio: 7.27 : 1
'Natural speed' for length: 28.06 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 53
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 5.64 ft / 1.72 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 21.00 %, 29.53 ft / 9.00 m, 28.71 ft / 8.75 m
- Forward deck: 35.00 %, 28.71 ft / 8.75 m, 28.71 ft / 8.75 m
- Aft deck: 24.96 %, 28.71 ft / 8.75 m, 28.71 ft / 8.75 m
- Quarter deck: 19.04 %, 19.69 ft / 6.00 m, 19.69 ft / 6.00 m
- Average freeboard: 27.06 ft / 8.25 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 91.7 %
- Above water (accommodation/working, high = better): 225.5 %
Waterplane Area: 64,581 Square feet or 6,000 Square metres
Displacement factor (Displacement / loading): 112 %
Structure weight / hull surface area: 197 lbs/sq ft or 964 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.43
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Misc Weight Distribution
-Below Water (1620t)
--1360t Electric Drives
--200t Additional Pumps
--45t Additional Damage Control Equipment
--15t Construction Reserve
-Above Water (150t)
--40t Improved Officer Accommodations
--40t Improved Crew Accomodations
--20t Additional Damage Control Equipment
--20t Enhanced Ventilation and Crew Comfort
--20t Short-Range Wireless (x2)
--10t Construction Reserve
-On Deck (615t)
--290t 1918 Fire Control
--90t Flag Facilities
--40t Admiralty Accommodations
--50t Long Range Wireless (x2)
--20t Enhanced Ventilation and Crew Comfort
--40t Night Fighting Equipment
--50t Additional Damage Control Equipment
--25t Huelsmeyre Equipment
--10t Construction Reserve
-Above Deck (50t)
--20t Additional Optical Spotting Equipment
--15t Night Fighting Equipment
--15t Improved Signaling Equipment
Turrets arranged A(B)[SS]Q[ss] with B superfiring A. Secondaries are grouped between B and Q (Side Fore Deck), or aft of Q (Side Aft Deck)
Armored deck is a 70mm Main deck with a 15mm splinter deck, 35mm uniform deck over the ends.
Cruise Speeds/SpringSharp Range/True Range (Electric Drive bonus)
10knts/16340nm/18791nm
14knts/8000nm/10000nm
20knts/3438nm/3953nm
25knts/1901mn/2186nm
29knts/1242nm/1428nm
Time at Top Speed: 49.24 Hours
Fastest Speed From Brest to Havana (3943nm):20knts for 197.15h transit
Cost: .0019 BP and Cash
--19t New Armament
On the aviation frigate, it's a big (litterally) advance from the Cardinal Richeliues.
Could you include the waterplane/hanger calc so we can see the airgroup result?
9m freeboard, so single hanger.
Single hanger means 3619/65= 55 aircraft - not 57.
2280 + 2280 = 4560 / 80 = 57 , so overpaid slightly
I notice the TDS is 2m higher than the draft, if you're deliberately having it rise above the WL to meet the deck like I do, it would be handy to mention that design feature in the notes. Otherwise it might be overlooked and you might not get credit for it.
I forgot just how many categories you broke out your Misc weight in.
Still difficult to ascertain how to evaluate all the categories in a battle
and how it would differ from what would normally be on a ship of that era.
There has been some discussions about 'how much' is needed for night fighting.
25tons is being judged as 'full' with searchlight tower and associated gear.
Less is kinda up to the different players. I've settled on 25t or equal to Fire control, whichever is less.
As a Mod clarification I have provided that 25t = full suite, including a Searchlight tower.
So, 55t may be more than you want.
No idea how I got 57 there, must have fat-fingered something. Revised below, Misc weight adjusted, slightly thickened the Armored Deck and Belt.
QuoteAF-28, Imperial Roman Republic Aviation Frigate laid down 1928
Displacement:
19,000 t light; 19,539 t standard; 21,356 t normal; 22,810 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(705.37 ft / 688.98 ft) x 75.46 ft x (22.97 / 24.27 ft)
(215.00 m / 210.00 m) x 23.00 m x (7.00 / 7.40 m)
Armament:
8 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 175 per gun
Quick firing guns in deck and hoist mounts, 1909 Model
8 x Single mounts on side ends, evenly spread
4 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
2 x Single mounts on sides amidships
2 raised mounts
2 x Single mounts on sides amidships
2 double raised mounts
16 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck mounts, 1926 Model
4 x Quad mounts on side ends, evenly spread
10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1925 Model
10 x Single mounts on sides, evenly spread
Weight of broadside 783 lbs / 355 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.54" / 90 mm 458.73 ft / 139.82 m 18.04 ft / 5.50 m
Ends: Unarmoured
Main Belt covers 102 % of normal length
- Torpedo Bulkhead - Additional damage containing bulkheads:
1.97" / 50 mm 458.73 ft / 139.82 m 29.53 ft / 9.00 m
Beam between torpedo bulkheads 59.88 ft / 18.25 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 1.97" / 50 mm
2nd: 0.39" / 10 mm 0.20" / 5 mm 0.59" / 15 mm
- Armoured deck - multiple decks:
For and Aft decks: 2.17" / 55 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 3.15" / 80 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 110,000 shp / 82,060 Kw = 30.34 kts
Range 10,000nm at 14.00 kts
Bunker at max displacement = 3,271 tons
Complement:
883 - 1,148
Cost:
£4.734 million / $18.936 million
Distribution of weights at normal displacement:
Armament: 270 tons, 1.3 %
- Guns: 270 tons, 1.3 %
Armour: 3,776 tons, 17.7 %
- Belts: 1,221 tons, 5.7 %
- Torpedo bulkhead: 987 tons, 4.6 %
- Armament: 47 tons, 0.2 %
- Armour Deck: 1,470 tons, 6.9 %
- Conning Tower: 52 tons, 0.2 %
Machinery: 3,425 tons, 16.0 %
Hull, fittings & equipment: 6,833 tons, 32.0 %
Fuel, ammunition & stores: 2,356 tons, 11.0 %
Miscellaneous weights: 4,696 tons, 22.0 %
- Hull below water: 2,258 tons
- Hull above water: 2,258 tons
- On freeboard deck: 130 tons
- Above deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
39,392 lbs / 17,868 Kg = 470.5 x 5.5 " / 140 mm shells or 5.0 torpedoes
Stability (Unstable if below 1.00): 1.35
Metacentric height 5.6 ft / 1.7 m
Roll period: 13.4 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.11
Seaboat quality (Average = 1.00): 1.96
Hull form characteristics:
Hull has a flush deck,
a normal bow and a round stern
Block coefficient (normal/deep): 0.626 / 0.633
Length to Beam Ratio: 9.13 : 1
'Natural speed' for length: 26.25 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 36
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 5.64 ft / 1.72 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 16.71 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
- Forward deck: 30.00 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
- Aft deck: 36.58 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
- Quarter deck: 16.71 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
- Average freeboard: 29.53 ft / 9.00 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 100.8 %
- Above water (accommodation/working, high = better): 248.1 %
Waterplane Area: 38,950 Square feet or 3,619 Square metres
Displacement factor (Displacement / loading): 132 %
Structure weight / hull surface area: 107 lbs/sq ft or 523 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.92
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Airgroup of 53 Planes (Pre 1933 tech) [45 Post 1933]
--3619/65 = 56.78 max aircraft pre 1933
--3619/80 = 45.23 max aircraft post 1933
Misc Weight Distribution
-Below Water (2258t)
--2138t Airgroup
--30t Additional Pumps
--60t Improved Damage Control Equipment
--30t Additional Aviation Stores
-Above Water (2258t)
--2138t Airgroup
--25t LR Wireless
--50t Improved Damage Control Equipment
--30t Enhanced Ventilation and Crew Comfort
--5t Cross Hanger Catapult
--5t Floatplane Recovery Equipment
--5t Construction Reserve
-On Deck (150t)
--27t 1918 Fire Control
--50t Enhanced Ventilation and Crew Comfort
--20t Improved Damage Control Equipment
--10t Short Range Wireless
--10t 2x Catapult (Front End of Flightdeck)
--10t Floatplane Recovery Equipment
--3t Construction Reserve
-Above Deck (50t)
--20t Additional Optical Spotting Equipment
--20t Night Fighting Equipment
--5t Improved Signaling Equipment
--5t Smoke Diversion Equipment
Oh I suspect that at one point the draft was a little shallower, or the beam broader, and that caused the waterplane to change a little, moving the calc from 57 to 55. Happens all the time.
I still want the calculation spelled out.
The rest of us should not need to look for the waterplane, and run the numbers
It should be in the notes.
Right now you're budgeting misc weight for 53.45 planes,
for a low, low 124 tons of misc weight you could do 55.
I'll edit it back in. The weight budgeted is the most I can do for a post-1933 airgroup, at 3619/80 for 45.2375.
Honestly, I'd trim "Improved Damage Control Equipment", "Enhanced Ventilation and Crew Comfort", SR radios are free for this generation of ship - though Parthian carriers pay for a 2nd SR radio as a dedicated channel, you have 15t in "5t Floatplane Recovery Equipment" which is optional and built into the cost of floatplanes, I would up night fighting to 25t....but overall you have a great deal of 'storyline' miscellaneous weight. I would think you could find the tonnage there.
Alternately, is there a clear benefit in 30.34 knots vs. 30.25? You'd save on both engine AND electric drive.
Looking at another bigger refit, this time Respublica (https://www.navalism.org/index.php/topic,7299.0.html). The intent here is to retain her as the "fast" capital ship on station in the Carribean for a time while other more modern ships cycle in-and-out of refits or complete construction. Eventually, her fate lies as the Amazon flagship, the investment now is felt to give a modern polish to an old hull that will be good enough while best is acquired.
QuoteRespublica (1929), Imperial Roman Large Armored Cruiser laid down 1910 (Engine 1929)
Displacement:
27,622 t light; 29,028 t standard; 29,765 t normal; 30,355 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(643.36 ft / 629.92 ft) x 91.86 ft x (26.25 / 26.70 ft)
(196.09 m / 192.00 m) x 28.00 m x (8.00 / 8.14 m)
Armament:
9 - 13.39" / 340 mm 45.0 cal guns - 1,450.64lbs / 658.00kg shells, 91 per gun
Breech loading guns in turret on barbette mounts, 1927 Model
2 x 3-gun mounts on centreline, forward deck forward
2 raised mounts - superfiring
1 x 3-gun mount on centreline, forward deck aft
12 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 175 per gun
Quick firing guns in deck and hoist mounts, 1909 Model
6 x Twin mounts on sides, aft evenly spread
2 raised mounts
6 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
4 x Single mounts on sides, aft evenly spread
4 raised mounts
2 x Single mounts on sides, forward deck centre
2 raised mounts
16 - 1.10" / 28.0 mm 55.0 cal guns - 0.73lbs / 0.33kg shells, 5,000 per gun
Anti-air guns in deck and hoist mounts, 1926 Model
2 x Quad mounts on sides, aft deck aft
2 raised mounts
2 x Quad mounts on sides, forward deck centre
2 double raised mounts
10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.00kg shells, 15,000 per gun
Machine guns in deck mounts, 1925 Model
10 x Single mounts on sides, evenly spread
10 raised mounts
Weight of broadside 14,225 lbs / 6,452 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 9.45" / 240 mm 379.72 ft / 115.74 m 16.40 ft / 5.00 m
Ends: 3.94" / 100 mm 250.20 ft / 76.26 m 9.84 ft / 3.00 m
Upper: 3.94" / 100 mm 379.72 ft / 115.74 m 9.02 ft / 2.75 m
Main Belt covers 93 % of normal length
- Torpedo Bulkhead - Additional damage containing bulkheads:
1.57" / 40 mm 379.72 ft / 115.74 m 26.25 ft / 8.00 m
Beam between torpedo bulkheads 83.66 ft / 25.50 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 13.4" / 340 mm 7.09" / 180 mm 11.0" / 280 mm
2nd: 1.97" / 50 mm 0.59" / 15 mm 3.94" / 100 mm
3rd: 0.20" / 5 mm - 0.98" / 25 mm
- Armoured deck - multiple decks:
For and Aft decks: 3.94" / 100 mm
Forecastle: 1.38" / 35 mm Quarter deck: 1.38" / 35 mm
- Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 100,000 shp / 74,600 Kw = 27.45 kts
Range 6,000nm at 10.00 kts
Bunker at max displacement = 1,326 tons
Complement:
1,132 - 1,472
Cost:
£2.556 million / $10.223 million
Distribution of weights at normal displacement:
Armament: 2,633 tons, 8.8 %
- Guns: 2,633 tons, 8.8 %
Armour: 9,343 tons, 31.4 %
- Belts: 3,566 tons, 12.0 %
- Torpedo bulkhead: 581 tons, 2.0 %
- Armament: 2,108 tons, 7.1 %
- Armour Deck: 2,883 tons, 9.7 %
- Conning Tower: 204 tons, 0.7 %
Machinery: 3,071 tons, 10.3 %
Hull, fittings & equipment: 10,615 tons, 35.7 %
Fuel, ammunition & stores: 2,143 tons, 7.2 %
Miscellaneous weights: 1,960 tons, 6.6 %
- Hull below water: 1,220 tons
- Hull above water: 210 tons
- On freeboard deck: 480 tons
- Above deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
39,056 lbs / 17,716 Kg = 32.6 x 13.4 " / 340 mm shells or 5.8 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 5.4 ft / 1.6 m
Roll period: 16.7 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.84
Seaboat quality (Average = 1.00): 1.00
Hull form characteristics:
Hull has raised forecastle,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.686 / 0.688
Length to Beam Ratio: 6.86 : 1
'Natural speed' for length: 25.10 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 2.99 ft / 0.91 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 24.72 %, 28.71 ft / 8.75 m, 28.71 ft / 8.75 m
- Forward deck: 30.00 %, 19.69 ft / 6.00 m, 19.69 ft / 6.00 m
- Aft deck: 30.28 %, 19.69 ft / 6.00 m, 19.69 ft / 6.00 m
- Quarter deck: 15.00 %, 19.69 ft / 6.00 m, 19.69 ft / 6.00 m
- Average freeboard: 21.92 ft / 6.68 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 81.9 %
- Above water (accommodation/working, high = better): 151.7 %
Waterplane Area: 45,803 Square feet or 4,255 Square metres
Displacement factor (Displacement / loading): 105 %
Structure weight / hull surface area: 188 lbs/sq ft or 919 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.61
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
Misc Distribution
-Below Water (1250t)
--768t Electric Drives
--200t Additional Pumps
--200t Additional Damage Control Equipment
--50t Improved Food & Drink storage
--2t Construction Reserve
-Above Water (210t)
--40t Improved Officer Accommodations
--40t Improved Crew Accommodations
--70t Additional Damage Control Equipment
--20t Enhanced Ventilation and Crew Comfort
--25t Long Range Wireless
--10t Construction Reserve
-On Deck (480t)
--261t 1918 Fire Control
--50t Aviation Facilities (2x Recon Plane & 2x Catapults)
--50t Flag Facilities
--50t Enhanced Ventilation and Crew Comfort
--48t Power Train Assist for 140mm guns
--10t Short Range Wireless
--11t Construction Reserve
-Above Deck (50t)
--25t Night Fighting Equipment
--15t Additional Optical Spotting Equipment
--10t Improved Signaling Equipment
Base Cost: $5.45
Armament: 2633t
2.633 BP / $5.266
New Engines + Electric Drives: 3071t + 768t
3.839 BP / $7.678
New Armored Decks: 2883t
2.883 BP / $2.883
Main Battery Magazine Update to SHS
$0.33
Misc Weight Refresh: 1960t
1.96 BP / $1.96
Total Cost: $23.567 / 11.315
Time: 14.56 Months / 3 Turns
Fiddle of something to do with the D-Class Destroyers (https://www.navalism.org/index.php/topic,7076.0.html), now completely obsolete in their design role. The idea is given they are still somewhat fast is to rip all the "big" guns and fish off them, replaced by a massive battery of 57mm guns making them into something heavy to anchor a MTB squadron or provide specialized anti-MTB escort in confined waters.
QuoteD-Class (1929), Imperial Roman Republic Light Corvette laid down 1906
Displacement:
747 t light; 775 t standard; 850 t normal; 910 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(259.20 ft / 252.62 ft) x 26.25 ft x (11.48 / 12.00 ft)
(79.00 m / 77.00 m) x 8.00 m x (3.50 / 3.66 m)
Armament:
10 - 2.24" / 57.0 mm 43.0 cal guns - 5.52lbs / 2.50kg shells, 300 per gun
Quick firing guns in deck mounts, 1926 Model
5 x Twin mounts on centreline ends, majority aft
3 raised mounts - superfiring
8 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 250 per gun
Anti-air guns in deck mounts, 1926 Model
2 x Quad mounts on sides, aft deck forward
2 raised mounts
6 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 10,000 per gun
Machine guns in deck mounts, 1925 Model
6 x Single mounts on sides, aft evenly spread
Weight of broadside 61 lbs / 28 kg
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.59" / 15 mm 0.39" / 10 mm -
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 20,000 shp / 14,920 Kw = 29.98 kts
Range 3,000nm at 10.00 kts
Bunker at max displacement = 135 tons
Caution: Delicate, lightweight machinery
Complement:
78 - 102
Cost:
£0.100 million / $0.399 million
Distribution of weights at normal displacement:
Armament: 11 tons, 1.3 %
- Guns: 11 tons, 1.3 %
Armour: 11 tons, 1.3 %
- Armament: 11 tons, 1.3 %
Machinery: 501 tons, 59.0 %
Hull, fittings & equipment: 189 tons, 22.2 %
Fuel, ammunition & stores: 103 tons, 12.1 %
Miscellaneous weights: 35 tons, 4.1 %
- On freeboard deck: 35 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
164 lbs / 74 Kg = 29.0 x 2.2 " / 57 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.33
Metacentric height 1.1 ft / 0.3 m
Roll period: 10.4 seconds
Steadiness - As gun platform (Average = 50 %): 49 %
- Recoil effect (Restricted arc if above 1.00): 0.11
Seaboat quality (Average = 1.00): 0.72
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.391 / 0.400
Length to Beam Ratio: 9.63 : 1
'Natural speed' for length: 15.89 kts
Power going to wave formation at top speed: 69 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 2.40 ft / 0.73 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 15.58 ft / 4.75 m, 15.58 ft / 4.75 m
- Forward deck: 20.00 %, 15.58 ft / 4.75 m, 15.58 ft / 4.75 m
- Aft deck: 45.00 %, 6.56 ft / 2.00 m, 6.56 ft / 2.00 m
- Quarter deck: 15.00 %, 6.56 ft / 2.00 m, 6.56 ft / 2.00 m
- Average freeboard: 10.17 ft / 3.10 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 195.0 %
- Above water (accommodation/working, high = better): 92.5 %
Waterplane Area: 4,057 Square feet or 377 Square metres
Displacement factor (Displacement / loading): 32 %
Structure weight / hull surface area: 25 lbs/sq ft or 122 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.62
- Overall: 0.56
Cramped machinery, storage, compartmentation space
Adequate accommodation and workspace room
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
Misc would include fire control and night fighting equipment. If this makes sense, I'd look at doing the same to the remaining F-class boats (https://www.navalism.org/index.php/topic,7301.0.html) as well.
Interesting concept. Takes the IJN's rotary cannon into a much more updated basis.
The small shell size constrains accuracy, but I would guess the extra ROF makes up for it.
I'll confess that my desire for guns that could hurt a destroyer make me biased against it,
but that's a design choice you're making.
Do you have DP mounts for the 57mm ?
Would it be worth delaying until you do?
I think you'd want a higher magazine capacity for the 57mm guns, perhaps.
Quote from: The Rock Doctor on August 27, 2024, 05:23:27 AMI think you'd want a higher magazine capacity for the 57mm guns, perhaps.
The 28mm AAMGs as well.
I concur. I'm doing 3-400 RPG for my 90 and 120mm offerings, and lighter stuff is getting 1500 RPG if not more....even in the mid 30s the need for a lot of AA shells is apparent.