US/CB/1941 Large A2, Enter country Enter ship type laid down 1941 (Engine 1947)
Displacement:
105,619 t light; 110,141 t standard; 116,500 t normal; 121,587 t full load
Dimensions: Length overall / water x beam x draught
1,254.10 ft / 1,250.00 ft x 150.00 ft x 37.00 ft (normal load)
382.25 m / 381.00 m x 45.72 m x 11.28 m
Armament:
9 - 21.00" / 533 mm guns (3x3 guns), 4,630.50lbs / 2,100.36kg shells, 1941 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
24 - 5.10" / 130 mm guns (12x2 guns), 66.33lbs / 30.08kg shells, 1941 Model
Breech loading guns in turrets (on barbettes)
on side, all amidships, 4 raised mounts - superfiring
84 - 1.57" / 40.0 mm guns (41 mounts), 1.95lbs / 0.89kg shells, 1941 Model
Breech loading guns in deck mounts with hoists
on side ends, majority forward, 14 raised mounts - superfiring
Weight of broadside 43,430 lbs / 19,700 kg
Shells per gun, main battery: 90
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 15.0" / 381 mm 810.00 ft / 246.89 m 17.00 ft / 5.18 m
Ends: Unarmoured
Main Belt covers 100 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 17.0" / 432 mm 9.00" / 229 mm 15.0" / 381 mm
2nd: 4.00" / 102 mm 3.00" / 76 mm 4.00" / 102 mm
3rd: 2.00" / 51 mm - -
- Armour deck: 8.00" / 203 mm, Conning tower: 17.00" / 432 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 8 shafts, 447,625 shp / 333,928 Kw = 35.00 kts
Range 12,000nm at 15.00 kts
Bunker at max displacement = 11,446 tons
Complement:
3,152 - 4,098
Cost:
£60.612 million / $242.450 million
Distribution of weights at normal displacement:
Armament: 5,429 tons, 4.7 %
Armour: 37,797 tons, 32.4 %
- Belts: 8,786 tons, 7.5 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 8,073 tons, 6.9 %
- Armour Deck: 20,065 tons, 17.2 %
- Conning Tower: 874 tons, 0.7 %
Machinery: 11,058 tons, 9.5 %
Hull, fittings & equipment: 51,335 tons, 44.1 %
Fuel, ammunition & stores: 10,881 tons, 9.3 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
206,334 lbs / 93,591 Kg = 44.6 x 21.0 " / 533 mm shells or 9.1 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 12.4 ft / 3.8 m
Roll period: 17.9 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.63
Seaboat quality (Average = 1.00): 1.41
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.588
Length to Beam Ratio: 8.33 : 1
'Natural speed' for length: 35.36 kts
Power going to wave formation at top speed: 46 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 3.00 degrees
Stern overhang: 2.00 ft / 0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 40.00 ft / 12.19 m
- Forecastle (20 %): 35.00 ft / 10.67 m
- Mid (50 %): 35.00 ft / 10.67 m
- Quarterdeck (15 %): 35.00 ft / 10.67 m
- Stern: 35.00 ft / 10.67 m
- Average freeboard: 35.40 ft / 10.79 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 66.1 %
- Above water (accommodation/working, high = better): 286.7 %
Waterplane Area: 135,571 Square feet or 12,595 Square metres
Displacement factor (Displacement / loading): 113 %
Structure weight / hull surface area: 278 lbs/sq ft or 1,360 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.06
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
This is a forum for discussion of topics relating to the Dreadnought era, prior to the ascendency of naval aviation. We will be discussing history, ship design, and naval wargaming.
Friday, June 10, 2005
A new design for the US/CB/1941 Large
I just redesigned the US/CB/1941 Large in Springsharp. I used my new understanding about how to specify guns so that Springsharp knows what is superfiring and what is not. I will be curious to compare this version with what I did back in April (I believe it was). The photo is not affected by this, except, perhaps, that the turrets should be spread further apart. I am pleased with the result, since the design earns the following assessment from Springsharp: "Ship has slow, easy roll, [and is] a good, steady gun platform. [The ship is a ] Good seaboat, [and] rides out heavy weather easily." This is the Springsharp report:
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