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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