GB/BB/1941 Fast Battleship, Great Britain Battleship laid down 1941 (Engine 1945) Displacement: 48,387 t light; 50,534 t standard; 52,600 t normal; 54,253 t full load Dimensions: Length overall / water x beam x draught 866.80 ft / 864.00 ft x 112.00 ft x 32.00 ft (normal load) 264.20 m / 263.35 m x 34.14 m x 9.75 m Armament: 9 - 16.00" / 406 mm guns (3x3 guns), 2,048.00lbs / 928.96kg shells, 1941 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring 20 - 4.50" / 114 mm guns (10x2 guns), 45.56lbs / 20.67kg shells, 1941 Model Dual purpose guns in turrets (on barbettes) on side, all amidships 40 - 1.57" / 40.0 mm guns (10x4 guns), 1.95lbs / 0.89kg shells, 1941 Model Anti-aircraft guns in deck mounts on side, evenly spread, 7 raised mounts 12 - 1.57" / 40.0 mm guns (3x4 guns), 1.95lbs / 0.89kg shells, 1941 Model Anti-aircraft guns in deck mounts on centreline, evenly spread Weight of broadside 19,445 lbs / 8,820 kg Shells per gun, main battery: 100 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 14.0" / 356 mm 580.00 ft / 176.78 m 16.00 ft / 4.88 m Ends: Unarmoured Main Belt covers 103 % of normal length - Torpedo Bulkhead: 4.00" / 102 mm 580.00 ft / 176.78 m 32.00 ft / 9.75 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 14.0" / 356 mm 9.00" / 229 mm 14.0" / 356 mm 2nd: 5.00" / 127 mm 5.00" / 127 mm 5.00" / 127 mm - Armour deck: 6.00" / 152 mm, Conning tower: 14.00" / 356 mm Machinery: Oil fired boilers, steam turbines, Geared drive, 4 shafts, 169,042 shp / 126,106 Kw = 31.00 kts Range 6,500nm at 15.00 kts Bunker at max displacement = 3,720 tons Complement: 1,736 - 2,257 Cost: £26.785 million / $107.140 million Distribution of weights at normal displacement: Armament: 2,431 tons, 4.6 % Armour: 21,121 tons, 40.2 % - Belts: 5,535 tons, 10.5 % - Torpedo bulkhead: 2,747 tons, 5.2 % - Armament: 4,270 tons, 8.1 % - Armour Deck: 8,145 tons, 15.5 % - Conning Tower: 423 tons, 0.8 % Machinery: 4,269 tons, 8.1 % Hull, fittings & equipment: 20,567 tons, 39.1 % Fuel, ammunition & stores: 4,214 tons, 8.0 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 88,821 lbs / 40,288 Kg = 43.4 x 16.0 " / 406 mm shells or 16.6 torpedoes Stability (Unstable if below 1.00): 1.14 Metacentric height 7.6 ft / 2.3 m Roll period: 17.1 seconds Steadiness - As gun platform (Average = 50 %): 57 % - Recoil effect (Restricted arc if above 1.00): 0.56 Seaboat quality (Average = 1.00): 1.14 Hull form characteristics: Hull has a flush deck and transom stern Block coefficient: 0.595 Length to Beam Ratio: 7.71 : 1 'Natural speed' for length: 33.89 kts Power going to wave formation at top speed: 51 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): 5.00 degrees Stern overhang: 0.00 ft / 0.00 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 32.00 ft / 9.75 m - Forecastle (20 %): 24.00 ft / 7.32 m - Mid (50 %): 24.00 ft / 7.32 m - Quarterdeck (15 %): 24.00 ft / 7.32 m - Stern: 24.00 ft / 7.32 m - Average freeboard: 24.64 ft / 7.51 m Ship tends to be wet forward Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 75.1 % - Above water (accommodation/working, high = better): 193.2 % Waterplane Area: 73,378 Square feet or 6,817 Square metres Displacement factor (Displacement / loading): 107 % Structure weight / hull surface area: 209 lbs/sq ft or 1,020 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.98 - Longitudinal: 1.17 - Overall: 1.00 Hull space for machinery, storage, compartmentation is excellent Room for accommodation and workspaces is excellent
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Wednesday, December 13, 2006
The GB/BB/1941 fast battleship
The GB/BB/1941 is a 31-knot battleship with 9-16in BLR, 20-4.5in DP, and 52-2pdr AA guns. The armour basis is 14in. This is the Springsharp report:
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