Imperial Roman Republic: 1910H1

[snip]

A summary of the attached:
--Construction begins on the 29th Roman BP

--Construction begins on one (1) 1910 Battlecruiser, the IRS Respublica.
--Construction begins on five (5) 1910 Cruisers.
--Construction begins on ten (10) F-Class Destroyers
--Construction continues on two (2) 1909 Battleships, the IRS Praeventores and the IRS Termine

--Creation of four (4) new Deployment points
--Creation of six (6) new Air points

--Research begins on the following technologies
----1910 Capital Ships
----1910 Naval Artillery
----1910 Logistics
----1910 Cruisers
----1912 Fire Control

[snip]

IRS Respublica, Imperial Roman Navy Battlecruiser laid down 1910

Displacement:
   27,250 t light; 28,646 t standard; 29,765 t normal; 30,660 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 / 26.93 ft)
   (196.09 m / 192.00 m) x 28.00 m  x (8.00 / 8.21 m)

Armament:
      9 - 13.39" / 340 mm 45.0 cal guns - 1,212.54lbs / 550.00kg shells, 110 per gun
     Breech loading guns in turret on barbette mounts, 1909 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
      16 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 175 per gun
     Breech loading guns in casemate mounts, 1909 Model
     16 x Single mounts on sides, aft evenly spread
      8 raised mounts
      Weight of broadside 12,289 lbs / 5,574 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:   3.94" / 100 mm   0.98" / 25 mm      1.97" / 50 mm

   - Armoured deck - multiple decks:
   For and Aft decks: 2.95" / 75 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 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 = 2,014 tons

Complement:
   1,132 - 1,472

Cost:
   £2.631 million / $10.526 million

Distribution of weights at normal displacement:
   Armament: 2,564 tons, 8.6 %
      - Guns: 2,564 tons, 8.6 %
   Armour: 8,719 tons, 29.3 %
      - Belts: 3,569 tons, 12.0 %
      - Torpedo bulkhead: 581 tons, 2.0 %
      - Armament: 2,213 tons, 7.4 %
      - Armour Deck: 2,153 tons, 7.2 %
      - Conning Tower: 204 tons, 0.7 %
   Machinery: 4,132 tons, 13.9 %
   Hull, fittings & equipment: 9,995 tons, 33.6 %
   Fuel, ammunition & stores: 2,515 tons, 8.4 %
   Miscellaneous weights: 1,840 tons, 6.2 %
      - Hull below water: 1,250 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):
     35,367 lbs / 16,042 Kg = 29.5 x 13.4 " / 340 mm shells or 4.9 torpedoes
   Stability (Unstable if below 1.00): 1.15
   Metacentric height 5.7 ft / 1.7 m
   Roll period: 16.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.67
   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 / 0.689
   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): 92.3 %
      - Above water (accommodation/working, high = better): 151.7 %
   Waterplane Area: 45,795 Square feet or 4,254 Square metres
   Displacement factor (Displacement / loading): 102 %
   Structure weight / hull surface area: 178 lbs/sq ft or 871 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.50
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room

Misc Distribution
--Below Water (1250t)
----1033t Electric Drives
----60t 20x530mm Torpedo (5 tubes, two on each side, one on the bow, four torpedos each)
----7t Additional Torpedo handling equipment
----100t Additional Pumps
----50t Construction Reserve
--Above Water (100t)
----30t Flag Facilities
----30t Improved Officer Accommodations
----30t Improved Crew Accommodations
----10t Short-Range Wireless
--On Deck (450t)
----260t 1908 Fire Control
----40t Flag Facilities
----20t Admiralty Accommodations
----50t Long-Range Wireless x2
----20t Short-Range Wireless x2
----65t Additional Stores
----15t Construction Reserve
--Above Deck (100t)
----50t Improved Aquisition Structures
----25t Additional Searchlights
----25t Improved Signaling Equipment

[snip]

1910 Cruiser, Imperial Roman Republic Cruiser laid down 1910

Displacement:
   5,000 t light; 5,175 t standard; 5,620 t normal; 5,976 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (485.85 ft / 475.72 ft) x 47.57 ft x (16.40 / 17.21 ft)
   (148.09 m / 145.00 m) x 14.50 m  x (5.00 / 5.24 m)

Armament:
      7 - 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
     5 x Single mounts on centreline ends, majority aft
      2 raised mounts - superfiring
     2 x Single mounts on sides, forward deck aft
      4 - 2.95" / 75.0 mm 50.0 cal guns - 13.23lbs / 6.00kg shells, 150 per gun
     Quick firing guns in deck mounts, 1902 Model
     4 x Single mounts on sides, aft evenly spread
      4 raised mounts
      Weight of broadside 655 lbs / 297 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.15" / 80 mm   389.63 ft / 118.76 m   8.20 ft / 2.50 m
   Ends:   Unarmoured
     Main Belt covers 126 % 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:   0.39" / 10 mm   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 2.76" / 70 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 46,000 shp / 34,316 Kw = 29.31 kts
   Range 7,000nm at 10.00 kts
   Bunker at max displacement = 801 tons

Complement:
   323 - 421

Cost:
   £0.517 million / $2.070 million

Distribution of weights at normal displacement:
   Armament: 218 tons, 3.9 %
      - Guns: 218 tons, 3.9 %
   Armour: 1,102 tons, 19.6 %
      - Belts: 398 tons, 7.1 %
      - Armament: 27 tons, 0.5 %
      - Armour Deck: 658 tons, 11.7 %
      - Conning Tower: 19 tons, 0.3 %
   Machinery: 1,901 tons, 33.8 %
   Hull, fittings & equipment: 1,604 tons, 28.5 %
   Fuel, ammunition & stores: 620 tons, 11.0 %
   Miscellaneous weights: 175 tons, 3.1 %
      - Hull below water: 5 tons
      - Hull above water: 50 tons
      - On freeboard deck: 105 tons
      - Above deck: 15 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4,160 lbs / 1,887 Kg = 49.7 x 5.5 " / 140 mm shells or 0.8 torpedoes
   Stability (Unstable if below 1.00): 1.25
   Metacentric height 2.5 ft / 0.8 m
   Roll period: 12.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.30
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.530 / 0.537
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 21.81 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: 2.07 ft / 0.63 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   9.05 %,  22.15 ft / 6.75 m,  19.69 ft / 6.00 m
      - Forward deck:   45.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Aft deck:   36.90 %,  10.66 ft / 3.25 m,  10.66 ft / 3.25 m
      - Quarter deck:   9.05 %,  10.66 ft / 3.25 m,  10.66 ft / 3.25 m
      - Average freeboard:      15.63 ft / 4.76 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 123.3 %
      - Above water (accommodation/working, high = better): 142.8 %
   Waterplane Area: 15,502 Square feet or 1,440 Square metres
   Displacement factor (Displacement / loading): 97 %
   Structure weight / hull surface area: 70 lbs/sq ft or 340 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.88
      - Longitudinal: 1.12
      - Overall: 0.90
   Caution: Hull subject to strain in open-sea
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
Misc Distribution
--Below Water (5t)
----5t Additional Pumps
--Above Water (40t)
----10t Improved Officer Accommodations
----10t Improved Crew Accommodations
----10t Short-Range Wireless
----5t Improved Ventilation
----5t Construction Reserve
--On Deck (105t)
----36t 12x530mm Torpedos [Two Tripple tube mounts per side]
----25t 1906 Fire Control
----25t Long-Range Wireless
----6t Improved Torpedo Handling Equipment
----5t Additional Officer accommodations
----3t Construction Reserve
--Above Deck (15t)
----10t Improved Aquisition Structures
----5t Additional Searchlights

[snip]

F-Class, Imperial Roman Republic Destroyer laid down 1910

Displacement:
   1,000 t light; 1,035 t standard; 1,106 t normal; 1,163 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (287.07 ft / 278.87 ft) x 29.53 ft x (11.48 / 11.87 ft)
   (87.50 m / 85.00 m) x 9.00 m  x (3.50 / 3.62 m)

Armament:
      4 - 3.94" / 100 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 175 per gun
     Quick firing guns in deck mounts, 1906 Model
     2 x Single mounts on centreline ends, evenly spread
      1 raised mount aft - superfiring
     2 x Single mounts on sides, forward deck centre
      2 - 1.77" / 45.0 mm 50.0 cal guns - 2.94lbs / 1.33kg shells, 250 per gun
     Quick firing guns in deck mounts, 1905 Model
     2 x Single mounts on sides, aft deck centre
      2 raised mounts
      4 - 0.26" / 6.5 mm 60.0 cal guns - 0.01lbs / 0.00kg shells, 1,500 per gun
     Machine guns in deck mounts, 1910 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 129 lbs / 59 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm         -               -
   2nd:   0.59" / 15 mm         -               -
   3rd:   0.59" / 15 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 28,000 shp / 20,888 Kw = 31.49 kts
   Range 3,000nm at 10.00 kts
   Bunker at max displacement = 128 tons

Complement:
   95 - 124

Cost:
   £0.129 million / $0.515 million

Distribution of weights at normal displacement:
   Armament: 24 tons, 2.1 %
      - Guns: 24 tons, 2.1 %
   Armour: 20 tons, 1.8 %
      - Armament: 20 tons, 1.8 %
   Machinery: 624 tons, 56.4 %
   Hull, fittings & equipment: 282 tons, 25.5 %
   Fuel, ammunition & stores: 106 tons, 9.6 %
   Miscellaneous weights: 50 tons, 4.5 %
      - On freeboard deck: 50 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     275 lbs / 125 Kg = 9.0 x 3.9 " / 100 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.32
   Metacentric height 1.3 ft / 0.4 m
   Roll period: 10.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 48 %
         - Recoil effect (Restricted arc if above 1.00): 0.19
   Seaboat quality  (Average = 1.00): 0.77

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.409 / 0.416
   Length to Beam Ratio: 9.44 : 1
   'Natural speed' for length: 16.70 kts
   Power going to wave formation at top speed: 70 %
   Trim (Max stability = 0, Max steadiness = 100): 59
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 2.23 ft / 0.68 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  16.40 ft / 5.00 m,  15.58 ft / 4.75 m
      - Forward deck:   44.00 %,  15.58 ft / 4.75 m,  15.58 ft / 4.75 m
      - Aft deck:   21.00 %,  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:      12.40 ft / 3.78 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 188.1 %
      - Above water (accommodation/working, high = better): 129.5 %
   Waterplane Area: 5,097 Square feet or 474 Square metres
   Displacement factor (Displacement / loading): 45 %
   Structure weight / hull surface area: 30 lbs/sq ft or 144 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 2.10
      - Overall: 0.57
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

Misc Distribution
--On Deck (50t)
----36t 12x530mm Torpedos [Two triple tube mounts per side]
----2t Improved spray protections for Torpedo tubes
----10t Short-Range Wireless
----2t Minesweeping Paravanes

[The Rock Doctor]

The BC is a fair beasty and might make me second-guess my AC program.

The report seems to suggest two superfiring turrets, but is that an intentional thing?

[snip]

Both sit at the same level, but are elevated due to the Forecastle.

[Walter]

... and as usual I cannot open your file...

[Kaiser Kirk]

Sorry if I'm late to the party.
On the BC - isn't a Block coefficient of .689 rather like a merchant?  I don't see any structural issue, but it's an odd choice. Is there a reason you're sticking to an 8m draft?
I get the idea of superfiring both, as the forecastle is 2.75m higher, and most pics seem to put MG barrels about 2m above deck, so good call...
but if they are both superfiring, then the "B" can't fire foreward?

Also, you list Armored Deck, Multiple decks.  So I presume one caps the main belt and the other the upper belt. Could you specify the thicknesses of each?

On the cruiser ... why are you slightly overpaying for Fire control?  It doesn't matter, and perhaps that was a place holder, but I'm curious.

On the destroyer ... ugh I need to up the speed of mine. I've always been slowish, my 1910 runs at 29kts, but I have more fuel than you.