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- USS Super-Alaska, USA Battlecruiser laid down 1941
- Displacement:
- 34,337 t light; 36,196 t standard; 39,669 t normal; 42,446 t full load
- Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
- (812.54 ft / 795.50 ft) x 97.10 ft x (32.80 / 34.54 ft)
- (247.66 m / 242.47 m) x 29.60 m x (10.00 / 10.53 m)
- Armament:
- 12 - 14.00" / 356 mm 50.0 cal guns - 1,500.00lbs / 680.39kg shells, 100 per gun
- Breech loading guns in turret on barbette mounts, 1941 Model
- 3 x 3-gun mounts on centreline ends, majority forward
- 1 raised mount - superfiring
- 12 - 5.00" / 127 mm 38.0 cal guns - 55.00lbs / 24.95kg shells, 150 per gun
- Breech loading guns in deck and hoist mounts, 1941 Model
- 6 x 2-gun mounts on sides, evenly spread
- 6 raised mounts
- 56 - 1.57" / 40.0 mm 60.0 cal guns - 2.14lbs / 0.97kg shells, 150 per gun
- Anti-air guns in deck mounts, 1941 Model
- 14 x Quad mounts on centreline, evenly spread
- 34 - 0.79" / 20.0 mm 60.0 cal guns - 0.27lbs / 0.12kg shells, 150 per gun
- Anti-air guns in deck mounts, 1941 Model
- 34 x Single mounts on centreline, evenly spread
- Weight of broadside 18,789 lbs / 8,522 kg
- Armour:
- - Belts: Width (max) Length (avg) Height (avg)
- Main: 9.00" / 229 mm 397.75 ft / 121.23 m 11.82 ft / 3.60 m
- Ends: Unarmoured
- Main Belt covers 77 % of normal length
- Main belt does not fully cover magazines and engineering spaces
- - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
- Main: 12.8" / 325 mm 8.00" / 203 mm 13.0" / 330 mm
- 2nd: 1.00" / 25 mm 1.00" / 25 mm -
- 3rd: 0.50" / 13 mm - -
- 4th: 0.50" / 13 mm - -
- - Armoured deck - multiple decks: 6.03" / 153 mm For and Aft decks
- Forecastle: 0.00" / 0 mm Quarter deck: 3.00" / 76 mm
- - Conning towers: Forward 10.60" / 269 mm, Aft 0.00" / 0 mm
- Machinery:
- Oil fired boilers, steam turbines,
- Geared drive, 4 shafts, 179,837 shp / 134,158 Kw = 33.00 kts
- Range 12,000nm at 15.00 kts
- Bunker at max displacement = 6,250 tons
- Complement:
- 1,405 - 1,827
- Cost:
- £23.132 million / $92.530 million
- Distribution of weights at normal displacement:
- Armament: 4,226 tons, 10.7 %
- Armour: 10,371 tons, 26.1 %
- - Belts: 1,881 tons, 4.7 %
- - Armament: 3,317 tons, 8.4 %
- - Armour Deck: 4,907 tons, 12.4 %
- - Conning Tower: 266 tons, 0.7 %
- Machinery: 4,753 tons, 12.0 %
- Hull, fittings & equipment: 14,887 tons, 37.5 %
- Fuel, ammunition & stores: 5,331 tons, 13.4 %
- Miscellaneous weights: 100 tons, 0.3 %
- - Hull below water: 100 tons
- Overall survivability and seakeeping ability:
- Survivability (Non-critical penetrating hits needed to sink ship):
- 46,980 lbs / 21,310 Kg = 34.2 x 14.0 " / 356 mm shells or 3.7 torpedoes
- Stability (Unstable if below 1.00): 1.00
- Metacentric height 4.8 ft / 1.5 m
- Roll period: 18.6 seconds
- Steadiness - As gun platform (Average = 50 %): 57 %
- - Recoil effect (Restricted arc if above 1.00): 1.00
- Seaboat quality (Average = 1.00): 1.01
- Hull form characteristics:
- Hull has raised quarterdeck ,
- a normal bow and large transom stern
- Block coefficient (normal/deep): 0.548 / 0.557
- Length to Beam Ratio: 8.19 : 1
- 'Natural speed' for length: 32.52 kts
- Power going to wave formation at top speed: 55 %
- Trim (Max stability = 0, Max steadiness = 100): 56
- Bow angle (Positive = bow angles forward): 22.00 degrees
- Stern overhang: 3.30 ft / 1.01 m
- Freeboard (% = length of deck as a percentage of waterline length):
- Fore end, Aft end
- - Forecastle: 26.00 %, 34.00 ft / 10.36 m, 24.50 ft / 7.47 m
- - Forward deck: 18.00 %, 24.50 ft / 7.47 m, 22.50 ft / 6.86 m
- - Aft deck: 32.00 %, 22.50 ft / 6.86 m, 23.50 ft / 7.16 m
- - Quarter deck: 24.00 %, 24.50 ft / 7.47 m, 24.50 ft / 7.47 m
- - Average freeboard: 24.83 ft / 7.57 m
- Ship space, strength and comments:
- Space - Hull below water (magazines/engines, low = better): 81.8 %
- - Above water (accommodation/working, high = better): 175.9 %
- Waterplane Area: 56,015 Square feet or 5,204 Square metres
- Displacement factor (Displacement / loading): 105 %
- Structure weight / hull surface area: 208 lbs/sq ft or 1,013 Kg/sq metre
- Hull strength (Relative):
- - Cross-sectional: 0.96
- - Longitudinal: 1.50
- - Overall: 1.00
- Hull space for machinery, storage, compartmentation is excellent
- Room for accommodation and workspaces is excellent
- Additional Text
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