US/CB/1936, United States Enter ship type laid down 1936
Displacement:
116,905 t light; 121,965 t standard; 131,180 t normal; 138,551 t full load
Dimensions: Length overall / water x beam x draught
1,353.57 ft / 1,350.00 ft x 150.00 ft x 41.00 ft (normal load)
412.57 m / 411.48 m x 45.72 m x 12.50 m
Armament:
9 - 21.00" / 533 mm guns (3x3 guns), 4,630.50lbs / 2,100.36kg shells, 1936 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, all raised mounts - superfiring
12 - 6.00" / 152 mm guns (6x2 guns), 108.00lbs / 48.99kg shells, 1936 Model
Quick firing guns in turrets (on barbettes)
on side, evenly spread, all raised mounts
12 - 4.00" / 102 mm guns (6x2 guns), 32.00lbs / 14.51kg shells, 1936 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
56 - 1.57" / 40.0 mm guns (14x4 guns), 1.95lbs / 0.89kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 43,464 lbs / 19,715 kg
Shells per gun, main battery: 100
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 15.0" / 381 mm 730.00 ft / 222.50 m 20.00 ft / 6.10 m
Ends: Unarmoured
Main Belt covers 83 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 17.0" / 432 mm 10.0" / 254 mm 15.0" / 381 mm
2nd: 4.00" / 102 mm 3.00" / 76 mm 4.00" / 102 mm
3rd: 1.00" / 25 mm - -
- Armour deck: 7.00" / 178 mm, Conning tower: 12.00" / 305 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 8 shafts, 510,151 shp / 380,572 Kw = 36.00 kts
Range 15,000nm at 15.00 kts
Bunker at max displacement = 16,587 tons
Complement:
3,446 - 4,480
Cost:
£56.204 million / $224.815 million
Distribution of weights at normal displacement:
Armament: 5,433 tons, 4.1 %
Armour: 37,627 tons, 28.7 %
- Belts: 9,527 tons, 7.3 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 9,079 tons, 6.9 %
- Armour Deck: 18,353 tons, 14.0 %
- Conning Tower: 667 tons, 0.5 %
Machinery: 14,314 tons, 10.9 %
Hull, fittings & equipment: 59,532 tons, 45.4 %
Fuel, ammunition & stores: 14,274 tons, 10.9 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
217,022 lbs / 98,439 Kg = 46.9 x 21.0 " / 533 mm shells or 9.1 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 10.6 ft / 3.2 m
Roll period: 19.3 seconds
Steadiness - As gun platform (Average = 50 %): 75 %
- Recoil effect (Restricted arc if above 1.00): 0.85
Seaboat quality (Average = 1.00): 1.50
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.553
Length to Beam Ratio: 9.00 : 1
'Natural speed' for length: 36.74 kts
Power going to wave formation at top speed: 44 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 2.00 degrees
Stern overhang: 2.00 ft / 0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 45.00 ft / 13.72 m
- Forecastle (20 %): 37.00 ft / 11.28 m
- Mid (50 %): 37.00 ft / 11.28 m
- Quarterdeck (15 %): 37.00 ft / 11.28 m
- Stern: 38.00 ft / 11.58 m
- Average freeboard: 37.72 ft / 11.50 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 67.1 %
- Above water (accommodation/working, high = better): 289.8 %
Waterplane Area: 141,721 Square feet or 13,166 Square metres
Displacement factor (Displacement / loading): 120 %
Structure weight / hull surface area: 297 lbs/sq ft or 1,448 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.06
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
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Sunday, January 23, 2005
Now, the extremely large American battlecruiser: US/CB/1936
The counterpart to the very large battleship is the very large (if not extremely large) battlecruiser. For whatever reason (perhaps a faulty calculation), the ship can reach 36 knots. I really did not have to do much to make this ship "work". One feature is that it is not so well protected against torpedoes. This is the Springsharp report for the US/CB/1936:
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