GB/CB/1937, Great Britain Battlecruiser laid down 1937 (Engine 1941) Displacement: 40,705 t light; 42,767 t standard; 44,700 t normal; 46,246 t full load Dimensions: Length overall / water x beam x draught 852.17 ft / 850.00 ft x 108.00 ft x 29.00 ft (normal load) 259.74 m / 259.08 m x 32.92 m x 8.84 m Armament: 9 - 16.00" / 406 mm guns (3x3 guns), 2,048.00lbs / 928.96kg shells, 1937 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring 16 - 6.00" / 152 mm guns (8x2 guns), 108.00lbs / 48.99kg shells, 1937 Model Quick firing guns in turrets (on barbettes) on side, evenly spread, 4 raised mounts 8 - 4.70" / 119 mm guns (4x2 guns), 51.91lbs / 23.55kg shells, 1937 Model Anti-aircraft guns in deck mounts on centreline, evenly spread 16 - 1.57" / 40.0 mm guns (2x8 guns), 1.95lbs / 0.89kg shells, 1937 Model Anti-aircraft guns in deck mounts on side, all amidships, 1 raised mount - superfiring 8 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.89kg shells, 1937 Model Anti-aircraft guns in deck mount on side, evenly spread, all raised mounts Weight of broadside 20,622 lbs / 9,354 kg Shells per gun, main battery: 100 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 11.0" / 279 mm 570.00 ft / 173.74 m 16.00 ft / 4.88 m Ends: Unarmoured Main Belt covers 103 % of normal length - Torpedo Bulkhead: 3.00" / 76 mm 570.00 ft / 173.74 m 29.00 ft / 8.84 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 12.0" / 305 mm 8.00" / 203 mm 12.0" / 305 mm 2nd: 5.00" / 127 mm 5.00" / 127 mm 5.00" / 127 mm - Armour deck: 4.00" / 102 mm, Conning tower: 12.00" / 305 mm Machinery: Oil fired boilers, steam turbines, Geared drive, 4 shafts, 119,919 shp / 89,459 Kw = 29.00 kts Range 6,500nm at 15.00 kts Bunker at max displacement = 3,479 tons Complement: 1,536 - 1,998 Cost: £22.002 million / $88.007 million Distribution of weights at normal displacement: Armament: 2,578 tons, 5.8 % Armour: 15,397 tons, 34.4 % - Belts: 4,265 tons, 9.5 % - Torpedo bulkhead: 1,835 tons, 4.1 % - Armament: 3,855 tons, 8.6 % - Armour Deck: 5,117 tons, 11.4 % - Conning Tower: 326 tons, 0.7 % Machinery: 3,169 tons, 7.1 % Hull, fittings & equipment: 19,561 tons, 43.8 % Fuel, ammunition & stores: 3,995 tons, 8.9 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 71,227 lbs / 32,308 Kg = 34.8 x 16.0 " / 406 mm shells or 12.1 torpedoes Stability (Unstable if below 1.00): 1.12 Metacentric height 7.0 ft / 2.1 m Roll period: 17.2 seconds Steadiness - As gun platform (Average = 50 %): 61 % - Recoil effect (Restricted arc if above 1.00): 0.71 Seaboat quality (Average = 1.00): 1.23 Hull form characteristics: Hull has a flush deck and transom stern Block coefficient: 0.588 Length to Beam Ratio: 7.87 : 1 'Natural speed' for length: 33.59 kts Power going to wave formation at top speed: 47 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): 4.00 degrees Stern overhang: 0.00 ft / 0.00 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 31.00 ft / 9.45 m - Forecastle (20 %): 23.00 ft / 7.01 m - Mid (50 %): 23.00 ft / 7.01 m - Quarterdeck (15 %): 23.00 ft / 7.01 m - Stern: 23.00 ft / 7.01 m - Average freeboard: 23.64 ft / 7.21 m Ship tends to be wet forward Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 82.0 % - Above water (accommodation/working, high = better): 197.2 % Waterplane Area: 69,155 Square feet or 6,425 Square metres Displacement factor (Displacement / loading): 106 % Structure weight / hull surface area: 214 lbs/sq ft or 1,043 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.98 - Longitudinal: 1.11 - Overall: 1.00 Hull space for machinery, storage, compartmentation is excellent Room for accommodation and workspaces is excellent Good seaboat, rides out heavy weather easily
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Monday, December 11, 2006
This is one of my 1980 designs: GB/CB/1937
This is part of a design pair (battleship and battlecruiser) that I did in the 1980's. This is the battlecruiser in the pair, the GB/CB/1937. This is 850ft long ship (on the waterline), with 9-16in guns. This is the Springsharp report:
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