GB/CB/1916, Great Britain Battlecruiser laid down 1916 (Engine 1923) Displacement: 49,840 t light; 52,115 t standard; 55,152 t normal; 57,581 t full load Dimensions: Length (overall / waterline) x beam x draught (normal/deep) (921.17 ft / 915.00 ft) x 112.00 ft x (34.00 / 35.18 ft) (280.77 m / 278.89 m) x 34.14 m x (10.36 / 10.72 m) Armament: 9 - 16.50" / 419 mm 45.0 cal guns - 2,265.01lbs / 1,027.39kg shells, 90 per gun Breech loading guns in turret on barbette mounts, 1916 Model 3 x Triple mounts on centreline ends, majority forward 16 - 6.00" / 152 mm 50.0 cal guns - 114.33lbs / 51.86kg shells, 150 per gun Quick firing guns in deck and hoist mounts, 1916 Model 8 x Single mounts on sides, forward deck aft 2 raised mounts - superfiring 8 x Single mounts on sides, aft deck forward 2 raised mounts - superfiring Weight of broadside 22,214 lbs / 10,076 kg Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 12.0" / 305 mm 635.00 ft / 193.55 m 9.00 ft / 2.74 m Ends: Unarmoured Upper: 9.00" / 229 mm 635.00 ft / 193.55 m 8.00 ft / 2.44 m Main Belt covers 107 % of normal length Main belt does not fully cover magazines and engineering spaces - Torpedo Bulkhead - Additional damage containing bulkheads: 2.00" / 51 mm 635.00 ft / 193.55 m 34.00 ft / 10.36 m Beam between torpedo bulkheads 78.00 ft / 23.77 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 14.0" / 356 mm 10.0" / 254 mm 14.0" / 356 mm 2nd: 5.00" / 127 mm 4.00" / 102 mm 5.00" / 127 mm - Armoured deck - multiple decks: For and Aft decks: 4.00" / 102 mm Forecastle: 4.00" / 102 mm Quarter deck: 4.00" / 102 mm - Conning towers: Forward 14.00" / 356 mm, Aft 9.00" / 229 mm Machinery: Oil fired boilers, steam turbines, Geared drive, 6 shafts, 229,235 shp / 171,009 Kw = 32.50 kts Range 6,500nm at 16.00 kts Bunker at max displacement = 5,466 tons Complement: 1,799 - 2,339 Cost: £8.033 million / $32.132 million Distribution of weights at normal displacement: Armament: 3,807 tons, 6.9 % - Guns: 3,807 tons, 6.9 % Armour: 16,802 tons, 30.5 % - Belts: 4,752 tons, 8.6 % - Torpedo bulkhead: 1,598 tons, 2.9 % - Armament: 4,388 tons, 8.0 % - Armour Deck: 5,346 tons, 9.7 % - Conning Towers: 718 tons, 1.3 % Machinery: 7,662 tons, 13.9 % Hull, fittings & equipment: 21,570 tons, 39.1 % Fuel, ammunition & stores: 5,311 tons, 9.6 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 77,326 lbs / 35,075 Kg = 34.4 x 16.5 " / 419 mm shells or 10.4 torpedoes Stability (Unstable if below 1.00): 1.14 Metacentric height 7.5 ft / 2.3 m Roll period: 17.1 seconds Steadiness - As gun platform (Average = 50 %): 62 % - Recoil effect (Restricted arc if above 1.00): 0.74 Seaboat quality (Average = 1.00): 1.24 Hull form characteristics: Hull has low quarterdeck , a normal bow and a cruiser stern Block coefficient (normal/deep): 0.554 / 0.559 Length to Beam Ratio: 8.17 : 1 'Natural speed' for length: 30.25 kts Power going to wave formation at top speed: 51 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): 10.00 degrees Stern overhang: 0.00 ft / 0.00 m Freeboard (% = length of deck as a percentage of waterline length): Fore end, Aft end - Forecastle: 20.00 %, 35.00 ft / 10.67 m, 30.00 ft / 9.14 m - Forward deck: 30.00 %, 30.00 ft / 9.14 m, 29.00 ft / 8.84 m - Aft deck: 17.00 %, 29.00 ft / 8.84 m, 29.00 ft / 8.84 m - Quarter deck: 33.00 %, 22.00 ft / 6.71 m, 22.00 ft / 6.71 m - Average freeboard: 27.44 ft / 8.36 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 114.1 % - Above water (accommodation/working, high = better): 222.9 % Waterplane Area: 71,789 Square feet or 6,669 Square metres Displacement factor (Displacement / loading): 106 % Structure weight / hull surface area: 221 lbs/sq ft or 1,080 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.98 - Longitudinal: 1.23 - Overall: 1.00 Cramped machinery, storage, compartmentation space Excellent accommodation and workspace room Good seaboat, rides out heavy weather easily
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Wednesday, November 26, 2008
The GB/CB/1916 (Hood style)
I had this concept for a variant of the GB/CB/1916 design that would rather Hood-like with 9-16.5in/45 and 16-6in QF guns with a 32.5 knot speed. The thickest part of the belt is 12in and the ship uses "all or nothing" protection. The "look" is similar to the 36-knot ship, which is an intermediate type between the Repulse and the Hood.
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