The first in a series of designs I'm considering to replace the Texas, Nevada, Pennsylvania, and New Mexico classes in the late 1930's. This is the slowest of the lot at 26kts. Most of the rest are 28kts, including a 20 gun design that reduces the belt armor to 11 inches. The others are all based on the North Carolina's armor scheme.
Spaced out the turrets a bit more, they were too cramped!
Filled out the hull abeam A turret, and lengthened the bow to add more width abeam the forward turret.
Lengthened the stern to give the shafts room, and updated the armor scheme to match the North Carolina exactly. This makes her illegal under Cleito, since she is now beyond the 42,000 ton "fudge" limit.
USS South Carolina, United States Battleship laid down 1937
Displacement:
42,304 t light; 44,858 t standard; 47,271 t normal; 49,201 t full load
Dimensions: Length overall / water x beam x draught
853.99 ft / 839.00 ft x 108.00 ft x 31.00 ft (normal load)
260.30 m / 255.73 m x 32.92 m x 9.45 m
Armament:
20 - 14.00" / 356 mm guns (5x4 guns), 1,372.00lbs / 622.33kg shells, 1937 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 2 raised mounts - superfiring
20 - 5.00" / 127 mm guns (10x2 guns), 62.50lbs / 28.35kg shells, 1937 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships, 6 raised mounts - superfiring
16 - 1.10" / 27.9 mm guns (4x4 guns), 0.67lbs / 0.30kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on centreline, evenly spread, all raised mounts
12 - 0.30" / 7.6 mm guns in single mounts, 0.01lbs / 0.00kg shells, 1937 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 28,701 lbs / 13,018 kg
Shells per gun, main battery: 100
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.5" / 318 mm 441.00 ft / 134.42 m 12.47 ft / 3.80 m
Ends: Unarmoured
Main Belt covers 81 % of normal length
- Torpedo Bulkhead:
3.00" / 76 mm 441.00 ft / 134.42 m 29.15 ft / 8.88 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 16.0" / 406 mm 9.50" / 241 mm 16.0" / 406 mm
2nd: 2.50" / 64 mm 2.50" / 64 mm 2.50" / 64 mm
- Armour deck: 5.00" / 127 mm, Conning tower: 16.00" / 406 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 42,742 shp / 31,886 Kw = 21.00 kts
Range 17,500nm at 10.00 kts
Bunker at max displacement = 4,344 tons
Complement:
1,602 - 2,083
Cost:
£25.419 million / $101.674 million
Distribution of weights at normal displacement:
Armament: 3,588 tons, 7.6 %
Armour: 16,111 tons, 34.1 %
- Belts: 3,073 tons, 6.5 %
- Torpedo bulkhead: 1,427 tons, 3.0 %
- Armament: 5,093 tons, 10.8 %
- Armour Deck: 6,067 tons, 12.8 %
- Conning Tower: 451 tons, 1.0 %
Machinery: 1,185 tons, 2.5 %
Hull, fittings & equipment: 21,270 tons, 45.0 %
Fuel, ammunition & stores: 4,967 tons, 10.5 %
Miscellaneous weights: 150 tons, 0.3 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
61,749 lbs / 28,009 Kg = 45.0 x 14.0 " / 356 mm shells or 10.6 torpedoes
Stability (Unstable if below 1.00): 1.06
Metacentric height 6.2 ft / 1.9 m
Roll period: 18.2 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.73
Seaboat quality (Average = 1.00): 1.02
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.589
Length to Beam Ratio: 7.77 : 1
'Natural speed' for length: 28.97 kts
Power going to wave formation at top speed: 32 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 17.50 degrees
Stern overhang: 6.00 ft / 1.83 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.50 ft / 8.69 m
- Forecastle (18 %): 19.50 ft / 5.94 m
- Mid (50 %): 16.00 ft / 4.88 m
- Quarterdeck (15 %): 17.00 ft / 5.18 m
- Stern: 18.50 ft / 5.64 m
- Average freeboard: 18.25 ft / 5.56 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 80.7 %
- Above water (accommodation/working, high = better): 133.3 %
Waterplane Area: 65,594 Square feet or 6,094 Square metres
Displacement factor (Displacement / loading): 100 %
Structure weight / hull surface area: 246 lbs/sq ft or 1,200 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.10
- Longitudinal: 0.96
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Main armor belt inclined 15'
Thursday, April 18th 2024, 4:45am
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