Did I go to light on displacement on this class?
49,500 tons displace, oil fired boilers, turbine driven, 29.5 knots, 8 x 18/48s in twin turrets (Superfiring), 8 x 5.25/50s in twin turrets, 24 x 2 pdr AA Cannons in quad mounts
This is a quick battleship Springsharp. I used US 18" guns, Iowa turret armor, and citadel armor fairly close to a KGV. I could bring the ship down to 3" of deck armor and 10" of belt armor to get the weight under control, but then the ship is vulnerable to heavy cruisers at long range.
Almirante Brown, Argentine battleship laid down 1935 (Engine 1936)
Displacement:
49,438 t light; 52,365 t standard; 56,668 t normal; 60,110 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(872.04 ft / 860.00 ft) x 125.00 ft x (30.00 / 31.51 ft)
(265.80 m / 262.13 m) x 38.10 m x (9.14 / 9.60 m)
Armament:
8 - 18.00" / 457 mm 48.0 cal guns - 2,900.01lbs / 1,315.42kg shells, 125 per gun
Breech loading guns in turret on barbette mounts, 1920 Model
4 x Twin mounts on centreline ends, evenly spread
2 raised mounts - superfiring
8 - 5.25" / 133 mm 50.0 cal guns - 80.01lbs / 36.29kg shells, 400 per gun
Quick firing guns in deck and hoist mounts, 1935 Model
4 x Twin mounts on sides, evenly spread
24 - 1.57" / 40.0 mm 40.0 cal guns - 2.01lbs / 0.91kg shells, 1,500 per gun
Anti-air guns in deck mounts, 1923 Model
6 x Quad mounts on sides, evenly spread
Weight of broadside 23,888 lbs / 10,836 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14.0" / 356 mm 559.00 ft / 170.38 m 13.42 ft / 4.09 m
Ends: 2.00" / 51 mm 300.98 ft / 91.74 m 13.42 ft / 4.09 m
Upper: 3.00" / 76 mm 559.00 ft / 170.38 m 8.00 ft / 2.44 m
Main Belt covers 100 % of normal length
- Torpedo Bulkhead - Additional damage containing bulkheads:
1.50" / 38 mm 559.00 ft / 170.38 m 28.57 ft / 8.71 m
Beam between torpedo bulkheads 105.00 ft / 32.00 m
- Hull void:
1.00" / 25 mm 559.00 ft / 170.38 m 28.57 ft / 8.71 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 20.0" / 508 mm 12.0" / 305 mm 18.0" / 457 mm
2nd: 1.00" / 25 mm 1.00" / 25 mm 1.00" / 25 mm
- Armoured deck - multiple decks:
For and Aft decks: 6.00" / 152 mm
Forecastle: 4.00" / 102 mm Quarter deck: 4.00" / 102 mm
- Conning towers: Forward 12.00" / 305 mm, Aft 8.00" / 203 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 172,724 shp / 128,852 Kw = 29.50 kts
Range 12,000nm at 15.00 kts
Bunker at max displacement = 7,745 tons
Complement:
1,836 - 2,387
Cost:
£24.967 million / $99.866 million
Distribution of weights at normal displacement:
Armament: 4,185 tons, 7.4 %
- Guns: 4,185 tons, 7.4 %
Armour: 22,196 tons, 39.2 %
- Belts: 5,429 tons, 9.6 %
- Torpedo bulkhead: 886 tons, 1.6 %
- Void: 591 tons, 1.0 %
- Armament: 6,287 tons, 11.1 %
- Armour Deck: 8,367 tons, 14.8 %
- Conning Towers: 636 tons, 1.1 %
Machinery: 4,846 tons, 8.6 %
Hull, fittings & equipment: 18,211 tons, 32.1 %
Fuel, ammunition & stores: 7,230 tons, 12.8 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
71,233 lbs / 32,311 Kg = 24.4 x 18.0 " / 457 mm shells or 11.8 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 9.4 ft / 2.9 m
Roll period: 17.1 seconds
Steadiness - As gun platform (Average = 50 %): 58 %
- Recoil effect (Restricted arc if above 1.00): 0.57
Seaboat quality (Average = 1.00): 1.16
Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.615 / 0.621
Length to Beam Ratio: 6.88 : 1
'Natural speed' for length: 29.33 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 4.00 ft / 1.22 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 30.00 ft / 9.14 m, 28.00 ft / 8.53 m
- Forward deck: 30.00 %, 28.00 ft / 8.53 m, 26.00 ft / 7.92 m
- Aft deck: 35.00 %, 26.00 ft / 7.92 m, 26.00 ft / 7.92 m
- Quarter deck: 15.00 %, 26.00 ft / 7.92 m, 26.00 ft / 7.92 m
- Average freeboard: 26.86 ft / 8.19 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 81.5 %
- Above water (accommodation/working, high = better): 218.9 %
Waterplane Area: 79,731 Square feet or 7,407 Square metres
Displacement factor (Displacement / loading): 102 %
Structure weight / hull surface area: 184 lbs/sq ft or 901 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.76
- Longitudinal: 0.92
- Overall: 0.77
Caution: Hull subject to strain in open-sea
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room