GB/BB/1927, Great Britain Battleship laid down 1927 Displacement: 42,433 t light; 44,100 t standard; 46,570 t normal; 48,545 t full load Dimensions: Length overall / water x beam x draught 801.15 ft / 800.00 ft x 108.00 ft x 35.00 ft (normal load) 244.19 m / 243.84 m x 32.92 m x 10.67 m Armament: 8 - 15.00" / 381 mm guns (4x2 guns), 1,687.50lbs / 765.44kg shells, 1927 Model Breech loading guns in turrets (on barbettes) on centreline ends, evenly spread, all raised mounts - superfiring 16 - 5.00" / 127 mm guns (8x2 guns), 62.50lbs / 28.35kg shells, 1927 Model Quick firing guns in deck mounts with hoists on side, evenly spread, 4 raised mounts Weight of broadside 14,500 lbs / 6,577 kg Shells per gun, main battery: 90 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 13.0" / 330 mm 475.00 ft / 144.78 m 17.00 ft / 5.18 m Ends: 6.00" / 152 mm 240.00 ft / 73.15 m 16.00 ft / 4.88 m 85.00 ft / 25.91 m Unarmoured ends Main Belt covers 91 % of normal length - Torpedo Bulkhead: 2.00" / 51 mm 475.00 ft / 144.78 m 27.00 ft / 8.23 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 13.0" / 330 mm 8.00" / 203 mm 13.0" / 330 mm 2nd: 2.00" / 51 mm - - - Armour deck: 5.00" / 127 mm, Conning tower: 9.00" / 229 mm Machinery: Oil fired boilers, steam turbines, Geared drive, 4 shafts, 175,507 shp / 130,928 Kw = 32.00 kts Range 7,500nm at 15.00 kts Bunker at max displacement = 4,446 tons Complement: 1,584 - 2,060 Cost: £13.757 million / $55.029 million Distribution of weights at normal displacement: Armament: 1,813 tons, 3.9 % Armour: 16,426 tons, 35.3 % - Belts: 5,441 tons, 11.7 % - Torpedo bulkhead: 949 tons, 2.0 % - Armament: 4,039 tons, 8.7 % - Armour Deck: 5,746 tons, 12.3 % - Conning Tower: 251 tons, 0.5 % Machinery: 5,540 tons, 11.9 % Hull, fittings & equipment: 18,655 tons, 40.1 % Fuel, ammunition & stores: 4,136 tons, 8.9 % Miscellaneous weights: 0 tons, 0.0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 68,956 lbs / 31,278 Kg = 40.9 x 15.0 " / 381 mm shells or 10.0 torpedoes Stability (Unstable if below 1.00): 1.00 Metacentric height 5.6 ft / 1.7 m Roll period: 19.1 seconds Steadiness - As gun platform (Average = 50 %): 54 % - Recoil effect (Restricted arc if above 1.00): 0.72 Seaboat quality (Average = 1.00): 1.08 Hull form characteristics: Hull has a flush deck and transom stern Block coefficient: 0.539 Length to Beam Ratio: 7.41 : 1 'Natural speed' for length: 32.93 kts Power going to wave formation at top speed: 55 % Trim (Max stability = 0, Max steadiness = 100): 50 Bow angle (Positive = bow angles forward): 2.00 degrees Stern overhang: 0.00 ft / 0.00 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 33.00 ft / 10.06 m - Forecastle (20 %): 28.00 ft / 8.53 m - Mid (0 %): 27.00 ft / 8.23 m - Quarterdeck (15 %): 27.00 ft / 8.23 m - Stern: 27.00 ft / 8.23 m - Average freeboard: 27.50 ft / 8.38 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 83.8 % - Above water (accommodation/working, high = better): 200.5 % Waterplane Area: 62,117 Square feet or 5,771 Square metres Displacement factor (Displacement / loading): 111 % Structure weight / hull surface area: 209 lbs/sq ft or 1,019 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.95 - Longitudinal: 1.50 - Overall: 1.00 Hull space for machinery, storage, compartmentation is adequate Room for accommodation and workspaces is excellent
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Saturday, January 15, 2005
By trimming armor, I got my 1927 fast battleship (GB/BB/1927) to work
I had to trim armor and balloon displacement, but I was able to get 32 knots from my Vanguard-like design. It is like a Hood with better deck and side protection. The armor deck is 5in while the belt is 13in. I am pleased, as I had envisioned the full load displacement as 45,500 tons, anyway. I am trying to keep dimensions and speed, and make other compromises to achieve them, while having a good seaboat.
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