CSA Speculative Design Studies

Started by Guinness, August 31, 2008, 08:07:13 PM

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Guinness

Quote from: Logi on November 24, 2008, 08:21:29 PM
Nooooo! The small ships > big ships doctrine is the devil. Once it grasps hold of you, it'll never let you go. I say you build big ships and bigger ships. You build them so build its builder than the H44 Class! ;)

Well maybe if Woodrow escapes Versailles with his skin, he'll propose a conference on naval limitations! :)

A big chunk of the decision is likely to boil down to how much I can afford to build. For me at least, bigger ships usually are better than nearly equivalent smaller ships, but 2x8 gun ships would be better than 1x10 gun ship and some smaller stuff. I'm strongly biased against building single ship classes if I can avoid it.

Tanthalas

Quote from: guinness on November 24, 2008, 08:24:18 PM
Quote from: Logi on November 24, 2008, 08:21:29 PM
Nooooo! The small ships > big ships doctrine is the devil. Once it grasps hold of you, it'll never let you go. I say you build big ships and bigger ships. You build them so build its builder than the H44 Class! ;)

Well maybe if Woodrow escapes Versailles with his skin, he'll propose a conference on naval limitations! :)

A big chunk of the decision is likely to boil down to how much I can afford to build. For me at least, bigger ships usually are better than nearly equivalent smaller ships, but 2x8 gun ships would be better than 1x10 gun ship and some smaller stuff. I'm strongly biased against building single ship classes if I can avoid it.
... THe Swiss Decline to atend (unless you are planing on proposing an overall tonage limit per ship in which case we would joyfuly atend)
"He either fears his fate too much,
Or his desserts are small,
Who dares not put it to the touch,
To win or lose it all!"

James Graham, 5th Earl of Montrose
1612 to 1650
Royalist General during the English Civil War

Logi

RRC would attend, only to argue against the limitations. That is, unless he is proposing a tonnage limit per ship. In which case RRC has absolutely no problems with.

Guinness

The arms limitation conversation is interesting enough to me that I started a new thread for it here:

http://www.navalism.org/index.php?topic=3183.msg33864#msg33864

Guinness

Tonights edition of "which would you build (if any)":

CSA "Treaty Cruisers". More heavily armored than their OTL cousins.

Their mission: 1. Strategic scouting 2. Commerce raiding/protection 3. Tactical scouting out in front of the battlefleet

To build either, I'd need to develop a new 7.5" mount, and maybe even a whole new 7.5" gun.

The advantages of the 10 guns ship are that I can lay it down a half sooner, it's probably a slightly better ship, it's 750t lighter (which isn't much of an advantage), and I believe that the 5 twins probably have a practical rate of fire about equal to the 4 triples.

There's also a 13,000t version with twins over triples (10 guns) but heavier secondary battery.

CSA 2nd Class Cruiser 10x7.5, CSA Cruiser laid down 1916

Displacement:
   12,250 t light; 12,746 t standard; 14,183 t normal; 15,332 t full load

Dimensions: Length overall / water x beam x draught
   618.00 ft / 605.00 ft x 67.75 ft x 23.20 ft (normal load)
   188.37 m / 184.40 m x 20.65 m  x 7.07 m

Armament:
      10 - 7.50" / 191 mm guns (5x2 guns), 200.00lbs / 90.72kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward, 2 raised mounts - superfiring
      6 - 4.75" / 121 mm guns in single mounts, 50.00lbs / 22.68kg shells, 1916 Model
     Quick firing guns in deck mounts with hoists
     on side, evenly spread
      8 - 1.00" / 25.4 mm guns (4x2 guns), 0.50lbs / 0.23kg shells, 1916 Model
     Machine guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
      4 - 1.58" / 40.0 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1916 Model
     Anti-aircraft guns in deck mounts
     on side, all aft, all raised mounts - superfiring
   Weight of broadside 2,312 lbs / 1,049 kg
   Shells per gun, main battery: 160

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.50" / 114 mm   414.00 ft / 126.19 m   16.00 ft / 4.88 m
   Ends:   Unarmoured
     Main Belt covers 105 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5.50" / 140 mm   1.00" / 25 mm      4.50" / 114 mm
   2nd:   1.00" / 25 mm         -         1.50" / 38 mm

   - Armour deck: 1.50" / 38 mm, Conning tower: 5.00" / 127 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 100,000 shp / 74,600 Kw = 31.50 kts
   Range 7,080nm at 15.00 kts
   Bunker at max displacement = 2,586 tons

Complement:
   649 - 844

Cost:
   £1.975 million / $7.899 million

Distribution of weights at normal displacement:
   Armament: 305 tons, 2.2 %
   Armour: 2,595 tons, 18.3 %
      - Belts: 1,244 tons, 8.8 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 515 tons, 3.6 %
      - Armour Deck: 773 tons, 5.5 %
      - Conning Tower: 63 tons, 0.4 %
   Machinery: 3,726 tons, 26.3 %
   Hull, fittings & equipment: 5,242 tons, 37.0 %
   Fuel, ammunition & stores: 1,932 tons, 13.6 %
   Miscellaneous weights: 382 tons, 2.7 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     15,569 lbs / 7,062 Kg = 73.8 x 7.5 " / 191 mm shells or 1.7 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 3.3 ft / 1.0 m
   Roll period: 15.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.53
   Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.522
   Length to Beam Ratio: 8.93 : 1
   'Natural speed' for length: 24.60 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): 23.43 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      30.00 ft / 9.14 m
      - Forecastle (18 %):   26.50 ft / 8.08 m
      - Mid (66 %):      25.00 ft / 7.62 m (17.00 ft / 5.18 m aft of break)
      - Quarterdeck (18 %):   17.00 ft / 5.18 m
      - Stern:      17.00 ft / 5.18 m
      - Average freeboard:   23.17 ft / 7.06 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 105.1 %
      - Above water (accommodation/working, high = better): 192.7 %
   Waterplane Area: 27,868 Square feet or 2,589 Square metres
   Displacement factor (Displacement / loading): 110 %
   Structure weight / hull surface area: 115 lbs/sq ft or 563 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.65
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Misc Weights:
250t: Fire Control
25t: Long Range Marconi
50t: Flag Facilities
57t: Reserve

Range at 12 knots: 11590nm
Range at 15 knots: 7080nm
Range at 25 knots: 1946nm
Range at max speed: 987nm or 31 hours

Guns: A(B)C (X)Y

-------------------------------------------------------------------------

CSA 2nd Class Cruiser 12x7.5, CSA Cruiser laid down 1916

Displacement:
   13,000 t light; 13,548 t standard; 15,050 t normal; 16,252 t full load

Dimensions: Length overall / water x beam x draught
   638.00 ft / 625.00 ft x 69.00 ft x 23.40 ft (normal load)
   194.46 m / 190.50 m x 21.03 m  x 7.13 m

Armament:
      12 - 7.50" / 191 mm guns (4x3 guns), 200.00lbs / 90.72kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      6 - 4.75" / 121 mm guns in single mounts, 50.00lbs / 22.68kg shells, 1916 Model
     Quick firing guns in deck mounts with hoists
     on side, evenly spread
      8 - 1.00" / 25.4 mm guns (4x2 guns), 0.50lbs / 0.23kg shells, 1916 Model
     Machine guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
      4 - 1.58" / 40.0 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1916 Model
     Anti-aircraft guns in deck mounts
     on side, all aft, all raised mounts - superfiring
   Weight of broadside 2,712 lbs / 1,230 kg
   Shells per gun, main battery: 160

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.50" / 114 mm   424.00 ft / 129.24 m   16.00 ft / 4.88 m
   Ends:   Unarmoured
     Main Belt covers 104 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5.50" / 140 mm   1.00" / 25 mm      4.50" / 114 mm
   2nd:   1.00" / 25 mm         -         1.50" / 38 mm

   - Armour deck: 1.50" / 38 mm, Conning tower: 5.00" / 127 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 103,000 shp / 76,838 Kw = 31.57 kts
   Range 7,130nm at 15.00 kts
   Bunker at max displacement = 2,704 tons

Complement:
   679 - 883

Cost:
   £2.116 million / $8.463 million

Distribution of weights at normal displacement:
   Armament: 358 tons, 2.4 %
   Armour: 2,695 tons, 17.9 %
      - Belts: 1,274 tons, 8.5 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 541 tons, 3.6 %
      - Armour Deck: 814 tons, 5.4 %
      - Conning Tower: 66 tons, 0.4 %
   Machinery: 3,838 tons, 25.5 %
   Hull, fittings & equipment: 5,720 tons, 38.0 %
   Fuel, ammunition & stores: 2,051 tons, 13.6 %
   Miscellaneous weights: 390 tons, 2.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     16,700 lbs / 7,575 Kg = 79.2 x 7.5 " / 191 mm shells or 1.8 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 3.4 ft / 1.0 m
   Roll period: 15.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.60
   Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.522
   Length to Beam Ratio: 9.06 : 1
   'Natural speed' for length: 25.00 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): 23.43 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      30.00 ft / 9.14 m
      - Forecastle (18 %):   26.50 ft / 8.08 m
      - Mid (67 %):      25.00 ft / 7.62 m (17.00 ft / 5.18 m aft of break)
      - Quarterdeck (18 %):   17.00 ft / 5.18 m
      - Stern:      17.00 ft / 5.18 m
      - Average freeboard:   23.26 ft / 7.09 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 104.2 %
      - Above water (accommodation/working, high = better): 194.9 %
   Waterplane Area: 29,320 Square feet or 2,724 Square metres
   Displacement factor (Displacement / loading): 110 %
   Structure weight / hull surface area: 121 lbs/sq ft or 590 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.57
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Misc Weights:
250t: Fire Control
25t: Long Range Marconi
50t: Flag Facilities
65t: Reserve

Range at 12 knots: 11640nm
Range at 15 knots: 7130nm
Range at 25 knots: 1980nm
Range at max speed: 1003nm or 31.77 hours

The Rock Doctor

I agree about the 5x2 vs 4x3 ROF - so on that basis, would go with the lighter design.  I wouldn't worry about secondaries so much, as the main battery will be engaging the same kind of targets.

I suppose it's worth asking whether a lesser number of ~9 inch guns is worth considering...

Sachmle

Quote from: The Rock Doctor on November 28, 2008, 07:52:21 PM
I suppose it's worth asking whether a lesser number of ~9 inch guns is worth considering...

Such as 4x2 9" A(B) (X)Y?
"All treaties between great states cease to be binding when they come in conflict with the struggle for existence."
Otto von Bismarck

"Give me a woman who loves beer and I will conquer the world."
Kaiser Wilhelm

"If stupidity were painfull I would be deaf from all the screaming." Sam A. Grim

Guinness

Using the same hull and armor scheme, but mounting 9.2s reduces range by about a third. Considering the mission priority, I suspect the 7.5" guns are the better bargain.

CSA 2nd Class Cruiser 8x9.2 4 mounts, CSA Cruiser laid down 1916

Displacement:
   13,330 t light; 13,964 t standard; 15,050 t normal; 15,920 t full load

Dimensions: Length overall / water x beam x draught
   638.00 ft / 625.00 ft x 69.00 ft x 23.40 ft (normal load)
   194.46 m / 190.50 m x 21.03 m  x 7.13 m

Armament:
      8 - 9.20" / 234 mm guns (4x2 guns), 380.00lbs / 172.37kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      6 - 4.75" / 121 mm guns in single mounts, 50.00lbs / 22.68kg shells, 1916 Model
     Quick firing guns in deck mounts with hoists
     on side, evenly spread
      8 - 1.00" / 25.4 mm guns (4x2 guns), 0.50lbs / 0.23kg shells, 1916 Model
     Machine guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
      4 - 1.58" / 40.0 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1916 Model
     Anti-aircraft guns in deck mounts
     on side, all aft, all raised mounts - superfiring
   Weight of broadside 3,352 lbs / 1,520 kg
   Shells per gun, main battery: 175

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.50" / 114 mm   440.00 ft / 134.11 m   16.00 ft / 4.88 m
   Ends:   Unarmoured
     Main Belt covers 108 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5.50" / 140 mm   1.00" / 25 mm      4.50" / 114 mm
   2nd:   1.00" / 25 mm         -         1.50" / 38 mm

   - Armour deck: 1.50" / 38 mm, Conning tower: 5.00" / 127 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 103,000 shp / 76,838 Kw = 31.57 kts
   Range 711nm at 31.57 kts
   Bunker at max displacement = 1,956 tons

Complement:
   679 - 883

Cost:
   £2.235 million / $8.940 million

Distribution of weights at normal displacement:
   Armament: 431 tons, 2.9 %
   Armour: 2,749 tons, 18.3 %
      - Belts: 1,314 tons, 8.7 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 555 tons, 3.7 %
      - Armour Deck: 814 tons, 5.4 %
      - Conning Tower: 66 tons, 0.4 %
   Machinery: 3,838 tons, 25.5 %
   Hull, fittings & equipment: 5,935 tons, 39.4 %
   Fuel, ammunition & stores: 1,721 tons, 11.4 %
   Miscellaneous weights: 377 tons, 2.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     15,314 lbs / 6,946 Kg = 39.3 x 9.2 " / 234 mm shells or 1.7 torpedoes
   Stability (Unstable if below 1.00): 1.06
   Metacentric height 3.2 ft / 1.0 m
   Roll period: 16.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.76
   Seaboat quality  (Average = 1.00): 1.18

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.522
   Length to Beam Ratio: 9.06 : 1
   'Natural speed' for length: 25.00 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 59
   Bow angle (Positive = bow angles forward): 23.43 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      30.00 ft / 9.14 m
      - Forecastle (18 %):   26.50 ft / 8.08 m
      - Mid (67 %):      25.00 ft / 7.62 m (17.00 ft / 5.18 m aft of break)
      - Quarterdeck (18 %):   17.00 ft / 5.18 m
      - Stern:      17.00 ft / 5.18 m
      - Average freeboard:   23.26 ft / 7.09 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 108.0 %
      - Above water (accommodation/working, high = better): 194.9 %
   Waterplane Area: 29,320 Square feet or 2,724 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 125 lbs/sq ft or 612 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.60
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform

Misc Weights:
250t: Fire Control
25t: Long Range Marconi
50t: Flag Facilities
52t: Reserve

Range at 12 knots: 8250nm
Range at 15 knots: 5055nm
Range at 25 knots: 1404nm
Range at max speed: 711nm or 22.5 hours

Guinness

Actually, with a little work, the 9.2" armed ship doesn't look as bad. I'm still a bit concerned that it's not balanced enough though. With this armor, it feels like a light BC...

CSA 2nd Class Cruiser 8x9.2 4 mounts, CSA Cruiser laid down 1916

Displacement:
   13,950 t light; 14,603 t standard; 16,010 t normal; 17,136 t full load

Dimensions: Length overall / water x beam x draught
   648.00 ft / 635.00 ft x 74.00 ft x 22.50 ft (normal load)
   197.51 m / 193.55 m x 22.56 m  x 6.86 m

Armament:
      8 - 9.20" / 234 mm guns (4x2 guns), 380.00lbs / 172.37kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      6 - 4.75" / 121 mm guns in single mounts, 50.00lbs / 22.68kg shells, 1916 Model
     Quick firing guns in deck mounts with hoists
     on side, evenly spread
      8 - 1.00" / 25.4 mm guns (4x2 guns), 0.50lbs / 0.23kg shells, 1916 Model
     Machine guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
      4 - 1.58" / 40.0 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1916 Model
     Anti-aircraft guns in deck mounts
     on side, all aft, all raised mounts - superfiring
   Weight of broadside 3,352 lbs / 1,520 kg
   Shells per gun, main battery: 175

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.50" / 114 mm   432.00 ft / 131.67 m   16.00 ft / 4.88 m
   Ends:   Unarmoured
     Main Belt covers 105 % of normal length
     Main belt does not fully cover magazines and engineering spaces

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5.50" / 140 mm   1.00" / 25 mm      4.50" / 114 mm
   2nd:   1.00" / 25 mm         -         1.50" / 38 mm

   - Armour deck: 1.50" / 38 mm, Conning tower: 5.00" / 127 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 107,000 shp / 79,822 Kw = 31.51 kts
   Range 896nm at 31.51 kts
   Bunker at max displacement = 2,532 tons

Complement:
   711 - 925

Cost:
   £2.305 million / $9.219 million

Distribution of weights at normal displacement:
   Armament: 431 tons, 2.7 %
   Armour: 2,821 tons, 17.6 %
      - Belts: 1,304 tons, 8.1 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 555 tons, 3.5 %
      - Armour Deck: 893 tons, 5.6 %
      - Conning Tower: 68 tons, 0.4 %
   Machinery: 3,987 tons, 24.9 %
   Hull, fittings & equipment: 6,316 tons, 39.4 %
   Fuel, ammunition & stores: 2,060 tons, 12.9 %
   Miscellaneous weights: 396 tons, 2.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     18,063 lbs / 8,193 Kg = 46.4 x 9.2 " / 234 mm shells or 1.9 torpedoes
   Stability (Unstable if below 1.00): 1.11
   Metacentric height 3.9 ft / 1.2 m
   Roll period: 15.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.58
   Seaboat quality  (Average = 1.00): 1.17

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.530
   Length to Beam Ratio: 8.58 : 1
   'Natural speed' for length: 25.20 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 23.43 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      30.00 ft / 9.14 m
      - Forecastle (18 %):   26.50 ft / 8.08 m
      - Mid (67 %):      25.00 ft / 7.62 m (17.00 ft / 5.18 m aft of break)
      - Quarterdeck (18 %):   17.00 ft / 5.18 m
      - Stern:      17.00 ft / 5.18 m
      - Average freeboard:   23.26 ft / 7.09 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 104.8 %
      - Above water (accommodation/working, high = better): 204.3 %
   Waterplane Area: 32,186 Square feet or 2,990 Square metres
   Displacement factor (Displacement / loading): 109 %
   Structure weight / hull surface area: 128 lbs/sq ft or 623 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.49
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform

Misc Weights:
250t: Fire Control
25t: Long Range Marconi
50t: Flag Facilities
51t: Reserve

Range at 12 knots: 10405nm
Range at 15 knots: 6370nm
Range at 25 knots: 1763nm
Range at max speed: 896nm or 28.4 hours

The Rock Doctor

Tweak the belt length - you must be at ~104.5 - 104.7%.

Yeah, the size is creeping up there, and the armor starts to look a little light - still, depends on what you expect to see shooting back at her.

Guinness

#85
Probably pretty close to a buildable ship here:

CSA 2nd Class Cruiser 10x7.5 more armor, CSA Cruiser laid down 1916

Displacement:
   12,730 t light; 13,254 t standard; 15,050 t normal; 16,487 t full load

Dimensions: Length overall / water x beam x draught
   638.00 ft / 625.00 ft x 69.00 ft x 23.40 ft (normal load)
   194.46 m / 190.50 m x 21.03 m  x 7.13 m

Armament:
      10 - 7.50" / 191 mm guns (5x2 guns), 200.00lbs / 90.72kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward, 2 raised mounts - superfiring
      6 - 4.75" / 121 mm guns in single mounts, 50.00lbs / 22.68kg shells, 1916 Model
     Quick firing guns in deck mounts with hoists
     on side, evenly spread
      2 - 4.75" / 121 mm guns (1x2 guns), 50.00lbs / 22.68kg shells, 1916 Model
     Quick firing guns in a deck mount with hoist
     on centreline aft, all raised guns - superfiring
      8 - 1.00" / 25.4 mm guns (4x2 guns), 0.50lbs / 0.23kg shells, 1916 Model
     Machine guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
      4 - 1.58" / 40.0 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1916 Model
     Anti-aircraft guns in deck mounts
     on side, all aft, all raised mounts - superfiring
   Weight of broadside 2,412 lbs / 1,094 kg
   Shells per gun, main battery: 160

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.50" / 114 mm   416.00 ft / 126.80 m   16.00 ft / 4.88 m
   Ends:   Unarmoured
     Main Belt covers 102 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5.50" / 140 mm   1.00" / 25 mm      4.50" / 114 mm
   2nd:   1.00" / 25 mm         -         1.50" / 38 mm
   3rd:   1.00" / 25 mm         -         1.50" / 38 mm

   - Armour deck: 1.50" / 38 mm, Conning tower: 5.00" / 127 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 103,000 shp / 76,838 Kw = 31.57 kts
   Range 8,600nm at 15.00 kts
   Bunker at max displacement = 3,233 tons

Complement:
   679 - 883

Cost:
   £2.046 million / $8.185 million

Distribution of weights at normal displacement:
   Armament: 319 tons, 2.1 %
   Armour: 2,653 tons, 17.6 %
      - Belts: 1,254 tons, 8.3 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 520 tons, 3.5 %
      - Armour Deck: 814 tons, 5.4 %
      - Conning Tower: 66 tons, 0.4 %
   Machinery: 3,838 tons, 25.5 %
   Hull, fittings & equipment: 5,546 tons, 36.8 %
   Fuel, ammunition & stores: 2,320 tons, 15.4 %
   Miscellaneous weights: 375 tons, 2.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     17,549 lbs / 7,960 Kg = 83.2 x 7.5 " / 191 mm shells or 1.8 torpedoes
   Stability (Unstable if below 1.00): 1.12
   Metacentric height 3.5 ft / 1.1 m
   Roll period: 15.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.51
   Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.522
   Length to Beam Ratio: 9.06 : 1
   'Natural speed' for length: 25.00 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): 23.43 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      30.00 ft / 9.14 m
      - Forecastle (18 %):   26.50 ft / 8.08 m
      - Mid (66 %):      25.00 ft / 7.62 m (17.00 ft / 5.18 m aft of break)
      - Quarterdeck (18 %):   17.00 ft / 5.18 m
      - Stern:      17.00 ft / 5.18 m
      - Average freeboard:   23.17 ft / 7.06 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 102.1 %
      - Above water (accommodation/working, high = better): 193.8 %
   Waterplane Area: 29,320 Square feet or 2,724 Square metres
   Displacement factor (Displacement / loading): 114 %
   Structure weight / hull surface area: 117 lbs/sq ft or 573 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.54
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Misc Weights:
250t: Fire Control
25t: Long Range Marconi
50t: Flag Facilities
56t: Reserve

Range at 12 knots: 14040nm
Range at 15 knots: 8600nm
Range at 25 knots: 2388nm
Range at max speed: 1210nm or 38.3 hours

The Rock Doctor

The additional secondaries threw your belt length off.  Otherwise, it looks pretty solid.

Guinness


Borys

Quote from: guinness on November 28, 2008, 07:22:52 PM
The advantages of the 10 guns ship are that I can lay it down a half sooner, it's probably a slightly better ship, it's 750t lighter (which isn't much of an advantage), and I believe that the 5 twins

I agree that the combioned ROF of five twins is probably equal to four triples.

Borys
NEDS - Not Enough Deck Space for all those guns and torpedos;
Bambi must DIE!

Guinness

#89
War planning during the recent crisis has revealed certain deficiencies in the CSA's capability to project power when necessary. The first design to be produced to address these is a new troopship, adapted from Civilian design (and I'm posting this to see if I'm doing this right):

Quote
1916 Amphibious Transport 1912 Engines, CSA Transport laid down 1916 (Engine 1912)

Displacement:
   13,450 t light; 13,754 t standard; 14,954 t normal; 15,915 t full load

Dimensions: Length overall / water x beam x draught
   557.00 ft / 543.00 ft x 77.50 ft x 19.90 ft (normal load)
   169.77 m / 165.51 m x 23.62 m  x 6.07 m

Armament:
      2 - 3.50" / 88.9 mm guns in single mounts, 20.00lbs / 9.07kg shells, 1916 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread
      2 - 1.58" / 40.0 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1916 Model
     Anti-aircraft guns in deck mounts
     on side, all aft
      4 - 1.00" / 25.4 mm guns (2x2 guns), 0.50lbs / 0.23kg shells, 1916 Model
     Machine guns in deck mounts
     on side, all forward
   Weight of broadside 46 lbs / 21 kg
   Shells per gun, main battery: 150

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.25" / 6 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 26,000 shp / 19,396 Kw = 21.52 kts
   Range 7,765nm at 12.00 kts
   Bunker at max displacement = 2,161 tons

Complement:
   675 - 878

Cost:
   £1.016 million / $4.065 million

Distribution of weights at normal displacement:
   Armament: 6 tons, 0.0 %
   Armour: 1 tons, 0.0 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 1 tons, 0.0 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 1,037 tons, 6.9 %
   Hull, fittings & equipment: 4,538 tons, 30.3 %
   Fuel, ammunition & stores: 1,504 tons, 10.1 %
   Miscellaneous weights: 7,869 tons, 52.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     25,603 lbs / 11,613 Kg = 1,194.3 x 3.5 " / 89 mm shells or 2.6 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 4.1 ft / 1.2 m
   Roll period: 16.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.00
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.625
   Length to Beam Ratio: 7.01 : 1
   'Natural speed' for length: 23.30 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 25
   Bow angle (Positive = bow angles forward): 11.31 degrees
   Stern overhang: 8.00 ft / 2.44 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      30.00 ft / 9.14 m
      - Forecastle (10 %):   28.00 ft / 8.53 m
      - Mid (50 %):      27.00 ft / 8.23 m
      - Quarterdeck (10 %):   27.50 ft / 8.38 m
      - Stern:      28.00 ft / 8.53 m
      - Average freeboard:   27.56 ft / 8.40 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 80.5 %
      - Above water (accommodation/working, high = better): 243.4 %
   Waterplane Area: 31,503 Square feet or 2,927 Square metres
   Displacement factor (Displacement / loading): 150 %
   Structure weight / hull surface area: 94 lbs/sq ft or 459 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.91
      - Longitudinal: 2.13
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Misc Weight:
6666 tons: 3333 troops
1000t: 20 Extra motor launches (25t weight each)
678t: Cargo and reserve
25t: Long Range Marconi

Costs: $3.2625 and 3.3625 BP