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USS Kansas, United States Battleship laid down 1941
Displacement:
49,821 t light; 52,838 t standard; 56,863 t normal; 60,083 t full load
Dimensions: Length overall / water x beam x draught
891.55 ft / 860.00 ft x 110.00 ft (Bulges 116.00 ft) x 35.00 ft (normal load)
271.74 m / 262.13 m x 33.53 m (Bulges 35.36 m) x 10.67 m
Armament:
9 - 16.00" / 406 mm guns (3x3 guns), 2,700.00lbs / 1,224.70kg shells, 1941 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
16 - 5.00" / 127 mm guns (8x2 guns), 62.50lbs / 28.35kg shells, 1941 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships, all raised mounts - superfiring
4 - 5.00" / 127 mm guns (2x2 guns), 62.50lbs / 28.35kg shells, 1941 Model
Dual purpose guns in deck mounts with hoists
on centreline, all amidships, all raised mounts - superfiring
64 - 1.57" / 40.0 mm guns (16x4 guns), 1.95lbs / 0.88kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, all amidships, 14 raised mounts - superfiring
34 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1941 Model
Machine guns in deck mounts
on side, all amidships
Weight of broadside 25,683 lbs / 11,650 kg
Shells per gun, main battery: 130
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 17.0" / 432 mm 475.08 ft / 144.80 m 12.59 ft / 3.84 m
Ends: Unarmoured
Upper: 3.00" / 76 mm 475.08 ft / 144.80 m 8.00 ft / 2.44 m
Main Belt covers 85 % of normal length
- Torpedo Bulkhead and Bulges:
3.00" / 76 mm 475.08 ft / 144.80 m 32.58 ft / 9.93 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 17.0" / 432 mm 10.0" / 254 mm 17.5" / 445 mm
2nd: 2.00" / 51 mm 1.00" / 25 mm 2.00" / 51 mm
3rd: 0.50" / 13 mm - -
4th: 0.50" / 13 mm - -
- Armour deck: 6.50" / 165 mm, Conning tower: 18.00" / 457 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 228,903 shp / 170,762 Kw = 32.00 kts
Range 12,000nm at 15.00 kts
Bunker at max displacement = 7,246 tons
Complement:
1,840 - 2,393
Cost:
£28.877 million / $115.507 million
Distribution of weights at normal displacement:
Armament: 2,477 tons, 4.4 %
Armour: 19,430 tons, 34.2 %
- Belts: 4,993 tons, 8.8 %
- Torpedo bulkhead: 1,718 tons, 3.0 %
- Armament: 4,056 tons, 7.1 %
- Armour Deck: 8,089 tons, 14.2 %
- Conning Tower: 573 tons, 1.0 %
Machinery: 6,049 tons, 10.6 %
Hull, fittings & equipment: 21,715 tons, 38.2 %
Fuel, ammunition & stores: 7,042 tons, 12.4 %
Miscellaneous weights: 150 tons, 0.3 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
75,436 lbs / 34,217 Kg = 36.8 x 16.0 " / 406 mm shells or 12.2 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 7.6 ft / 2.3 m
Roll period: 17.7 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.55
Seaboat quality (Average = 1.00): 1.01
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.570
Length to Beam Ratio: 7.41 : 1
'Natural speed' for length: 29.33 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 32.00 degrees
Stern overhang: 7.80 ft / 2.38 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 38.00 ft / 11.58 m
- Forecastle (24 %): 22.00 ft / 6.71 m
- Mid (50 %): 21.00 ft / 6.40 m
- Quarterdeck (23 %): 21.00 ft / 6.40 m
- Stern: 23.00 ft / 7.01 m
- Average freeboard: 23.11 ft / 7.04 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 85.0 %
- Above water (accommodation/working, high = better): 147.9 %
Waterplane Area: 67,271 Square feet or 6,250 Square metres
Displacement factor (Displacement / loading): 110 %
Structure weight / hull surface area: 226 lbs/sq ft or 1,104 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.20
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Basically the Montana with one less turret and more speed. Hull form differs from the historical Iowa since it doesn't have the beam restriction of the Panama Canal.
Updated the Springsharp, forgot to include the super heavy 16" and fixed the freeboard.
USS Nebraska, United States Battleship laid down 1941
Displacement:
90,001 t light; 94,764 t standard; 100,517 t normal; 105,120 t full load
Dimensions: Length overall / water x beam x draught
1,147.19 ft / 1,120.00 ft x 130.00 ft (Bulges 138.00 ft) x 38.00 ft (normal load)
349.66 m / 341.38 m x 39.62 m (Bulges 42.06 m) x 11.58 m
Armament:
12 - 18.00" / 457 mm guns (4x3 guns), 3,850.00lbs / 1,746.33kg shells, 1941 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
20 - 6.00" / 152 mm guns (10x2 guns), 130.00lbs / 58.97kg shells, 1941 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships, 4 raised mounts - superfiring
96 - 1.57" / 40.0 mm guns (24x4 guns), 1.95lbs / 0.88kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 14 raised mounts
Weight of broadside 48,987 lbs / 22,220 kg
Shells per gun, main battery: 100
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 18.0" / 457 mm 571.76 ft / 174.27 m 13.68 ft / 4.17 m
Ends: Unarmoured
Main Belt covers 79 % of normal length
- Torpedo Bulkhead and Bulges:
3.00" / 76 mm 571.76 ft / 174.27 m 35.82 ft / 10.92 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 18.0" / 457 mm 12.0" / 305 mm 18.0" / 457 mm
2nd: 6.50" / 165 mm 4.00" / 102 mm 5.00" / 127 mm
3rd: 1.00" / 25 mm 1.00" / 25 mm -
- Armour deck: 9.00" / 229 mm, Conning tower: 18.00" / 457 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 210,674 shp / 157,163 Kw = 30.00 kts
Range 12,000nm at 15.00 kts
Bunker at max displacement = 10,356 tons
Complement:
2,822 - 3,669
Cost:
£48.528 million / $194.112 million
Distribution of weights at normal displacement:
Armament: 4,667 tons, 4.6 %
Armour: 36,778 tons, 36.6 %
- Belts: 6,241 tons, 6.2 %
- Torpedo bulkhead: 2,273 tons, 2.3 %
- Armament: 8,965 tons, 8.9 %
- Armour Deck: 18,461 tons, 18.4 %
- Conning Tower: 838 tons, 0.8 %
Machinery: 5,567 tons, 5.5 %
Hull, fittings & equipment: 42,488 tons, 42.3 %
Fuel, ammunition & stores: 10,516 tons, 10.5 %
Miscellaneous weights: 500 tons, 0.5 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
184,116 lbs / 83,513 Kg = 63.1 x 18.0 " / 457 mm shells or 34.2 torpedoes
Stability (Unstable if below 1.00): 1.09
Metacentric height 8.7 ft / 2.7 m
Roll period: 19.6 seconds
Steadiness - As gun platform (Average = 50 %): 74 %
- Recoil effect (Restricted arc if above 1.00): 0.94
Seaboat quality (Average = 1.00): 1.48
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.599
Length to Beam Ratio: 8.12 : 1
'Natural speed' for length: 38.41 kts
Power going to wave formation at top speed: 42 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 22.00 degrees
Stern overhang: 7.80 ft / 2.38 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 48.00 ft / 14.63 m
- Forecastle (26 %): 32.00 ft / 9.75 m
- Mid (50 %): 29.00 ft / 8.84 m
- Quarterdeck (23 %): 29.00 ft / 8.84 m
- Stern: 29.00 ft / 8.84 m
- Average freeboard: 31.84 ft / 9.70 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 64.8 %
- Above water (accommodation/working, high = better): 222.2 %
Waterplane Area: 110,880 Square feet or 10,301 Square metres
Displacement factor (Displacement / loading): 117 %
Structure weight / hull surface area: 274 lbs/sq ft or 1,339 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.14
- 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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