GB/CB/1912 Super Lion, Great Britain Battlecruiser laid down 1912 (Engine 1918)
Displacement:
41,153 t light; 43,216 t standard; 47,751 t normal; 51,378 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(823.00 ft / 815.00 ft) x 105.00 ft x (31.00 / 32.97 ft)
(250.85 m / 248.41 m) x 32.00 m x (9.45 / 10.05 m)
Armament:
10 - 15.00" / 381 mm 42.0 cal guns - 1,950.00lbs / 884.51kg shells, 90 per gun
Breech loading guns in turret on barbette mounts, 1912 Model
4 x Twin mounts on centreline ends, evenly spread
2 raised mounts - superfiring
1 x Twin mount on centreline, aft deck forward
14 - 6.00" / 152 mm 50.0 cal guns - 114.33lbs / 51.86kg shells, 150 per gun
Quick firing guns in casemate mounts, 1912 Model
14 x Single mounts on sides, evenly spread
14 hull mounts in casemates- Limited use in heavy seas
Weight of broadside 21,101 lbs / 9,571 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.0" / 305 mm 525.00 ft / 160.02 m 9.00 ft / 2.74 m
Ends: 5.00" / 127 mm 290.00 ft / 88.39 m 16.00 ft / 4.88 m
Upper: 8.00" / 203 mm 525.00 ft / 160.02 m 8.00 ft / 2.44 m
Main Belt covers 99 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead - Additional damage containing bulkheads:
1.50" / 38 mm 525.00 ft / 160.02 m 31.00 ft / 9.45 m
Beam between torpedo bulkheads 72.00 ft / 21.95 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
- 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 8.00" / 203 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 165,755 shp / 123,653 Kw = 30.00 kts
Range 7,500nm at 18.00 kts
Bunker at max displacement = 8,162 tons
Complement:
1,614 - 2,099
Cost:
£3.785 million / $15.142 million
Distribution of weights at normal displacement:
Armament: 2,838 tons, 5.9 %
- Guns: 2,838 tons, 5.9 %
Armour: 14,193 tons, 29.7 %
- Belts: 4,720 tons, 9.9 %
- Torpedo bulkhead: 903 tons, 1.9 %
- Armament: 4,407 tons, 9.2 %
- Armour Deck: 3,596 tons, 7.5 %
- Conning Towers: 567 tons, 1.2 %
Machinery: 5,980 tons, 12.5 %
Hull, fittings & equipment: 18,143 tons, 38.0 %
Fuel, ammunition & stores: 6,598 tons, 13.8 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
77,044 lbs / 34,946 Kg = 45.7 x 15.0 " / 381 mm shells or 10.3 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 6.8 ft / 2.1 m
Roll period: 16.9 seconds
Steadiness - As gun platform (Average = 50 %): 61 %
- Recoil effect (Restricted arc if above 1.00): 0.94
Seaboat quality (Average = 1.00): 1.21
Hull form characteristics:
Hull has low quarterdeck ,
a ram bow and a cruiser stern
Block coefficient (normal/deep): 0.630 / 0.637
Length to Beam Ratio: 7.76 : 1
'Natural speed' for length: 28.55 kts
Power going to wave formation at top speed: 52 %
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, 30.00 ft / 9.14 m
- Forward deck: 30.00 %, 30.00 ft / 9.14 m, 29.00 ft / 8.84 m
- Aft deck: 18.00 %, 29.00 ft / 8.84 m, 29.00 ft / 8.84 m
- Quarter deck: 27.00 %, 21.00 ft / 6.40 m, 21.00 ft / 6.40 m
- Average freeboard: 27.34 ft / 8.33 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 102.3 %
- Above water (accommodation/working, high = better): 222.6 %
Waterplane Area: 64,359 Square feet or 5,979 Square metres
Displacement factor (Displacement / loading): 118 %
Structure weight / hull surface area: 209 lbs/sq ft or 1,020 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.29
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Good seaboat, rides out heavy weather easily
This is a forum for discussion of topics relating to the Dreadnought era, prior to the ascendency of naval aviation. We will be discussing history, ship design, and naval wargaming.
Saturday, July 12, 2008
Another try at a Super Lion (GB/CB/1912)
This version of the Super Lion design is so good, there must be something wrong with the specification. This is a 30-knot battlecruiser with 10-15in/42 and 14-6in/50 QF guns, a 12in belt, 3in deck, and 7,500nm range:
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