GB/CB/1914, Great Britain Battlecruiser laid down 1914 (Engine 1921)
Displacement:
40,459 t light; 42,785 t standard; 45,940 t normal; 48,465 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(821.00 ft / 814.00 ft) x 108.00 ft x (31.00 / 32.39 ft)
(250.24 m / 248.11 m) x 32.92 m x (9.45 / 9.87 m)
Armament:
10 - 15.00" / 381 mm 42.0 cal guns - 1,920.01lbs / 870.90kg shells, 120 per gun
Breech loading guns in turret on barbette mounts, 1914 Model
4 x Twin mounts on centreline ends, evenly spread
2 raised mounts - superfiring
1 x Twin mount on centreline, forward deck aft
14 - 6.00" / 152 mm 45.0 cal guns - 108.93lbs / 49.41kg shells, 150 per gun
Quick firing guns in casemate mounts, 1914 Model
14 x Single mounts on sides, evenly spread
14 hull mounts in casemates- Limited use in heavy seas
Weight of broadside 20,725 lbs / 9,401 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.0" / 305 mm 570.00 ft / 173.74 m 9.00 ft / 2.74 m
Ends: Unarmoured
Upper: 9.00" / 229 mm 570.00 ft / 173.74 m 8.00 ft / 2.44 m
Main Belt covers 108 % of normal length
- Torpedo Bulkhead - Additional damage containing bulkheads:
2.00" / 51 mm 570.00 ft / 173.74 m 31.00 ft / 9.45 m
Beam between torpedo bulkheads 86.00 ft / 26.21 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 12.0" / 305 mm 9.00" / 229 mm 12.0" / 305 mm
2nd: 5.00" / 127 mm 4.00" / 102 mm 5.00" / 127 mm
- Armoured deck - multiple decks:
For and Aft decks: 3.00" / 76 mm
Forecastle: 3.00" / 76 mm Quarter deck: 3.00" / 76 mm
- Conning towers: Forward 12.00" / 305 mm, Aft 9.00" / 229 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 160,033 shp / 119,385 Kw = 30.00 kts
Range 7,500nm at 16.00 kts
Bunker at max displacement = 5,680 tons
Complement:
1,568 - 2,039
Cost:
£4.688 million / $18.752 million
Distribution of weights at normal displacement:
Armament: 2,794 tons, 6.1 %
- Guns: 2,794 tons, 6.1 %
Armour: 14,133 tons, 30.8 %
- Belts: 4,307 tons, 9.4 %
- Torpedo bulkhead: 1,308 tons, 2.8 %
- Armament: 4,380 tons, 9.5 %
- Armour Deck: 3,557 tons, 7.7 %
- Conning Towers: 580 tons, 1.3 %
Machinery: 5,511 tons, 12.0 %
Hull, fittings & equipment: 18,021 tons, 39.2 %
Fuel, ammunition & stores: 5,481 tons, 11.9 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
74,422 lbs / 33,757 Kg = 44.1 x 15.0 " / 381 mm shells or 11.0 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 7.2 ft / 2.2 m
Roll period: 16.9 seconds
Steadiness - As gun platform (Average = 50 %): 62 %
- Recoil effect (Restricted arc if above 1.00): 0.84
Seaboat quality (Average = 1.00): 1.25
Hull form characteristics:
Hull has low quarterdeck ,
a ram bow and a cruiser stern
Block coefficient (normal/deep): 0.590 / 0.596
Length to Beam Ratio: 7.54 : 1
'Natural speed' for length: 28.53 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -3.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 25.00 %, 31.00 ft / 9.45 m, 29.00 ft / 8.84 m
- Forward deck: 30.00 %, 29.00 ft / 8.84 m, 28.00 ft / 8.53 m
- Aft deck: 14.00 %, 28.00 ft / 8.53 m, 28.00 ft / 8.53 m
- Quarter deck: 31.00 %, 20.00 ft / 6.10 m, 20.00 ft / 6.10 m
- Average freeboard: 26.12 ft / 7.96 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 88.0 %
- Above water (accommodation/working, high = better): 219.3 %
Waterplane Area: 63,699 Square feet or 5,918 Square metres
Displacement factor (Displacement / loading): 117 %
Structure weight / hull surface area: 212 lbs/sq ft or 1,036 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.37
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Good seaboat, rides out heavy weather easily
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Tuesday, May 06, 2008
GB/CB/1914: my first Springsharp 3.0 3rd Beta design
I finally downloaded the third Springsharp 3.0 3rd Beta version. I decided to try the large, fast battlecruiser with 12in armour: the GB/CB/1914. This is a design that is more archaic looking than the Hood, but a stronger and more heavily armed ship:
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