GB/BB/1923a1, Great Britain Battleship laid down 1923
Displacement:
172,454 t light; 181,000 t standard; 191,873 t normal; 200,571 t full load
Dimensions: Length overall / water x beam x draught
1,354.47 ft / 1,350.00 ft x 180.00 ft x 42.00 ft (normal load)
412.84 m / 411.48 m x 54.86 m x 12.80 m
Armament:
12 - 24.00" / 610 mm guns (3x4 guns), 6,912.00lbs / 3,135.23kg shells, 1923 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, all raised mounts - superfiring
24 - 5.00" / 127 mm guns (12x2 guns), 62.50lbs / 28.35kg shells, 1923 Model
Quick firing guns in turrets (on barbettes)
on side, evenly spread, all raised mounts
Weight of broadside 84,444 lbs / 38,303 kg
Shells per gun, main battery: 100
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 18.0" / 457 mm 880.00 ft / 268.22 m 20.00 ft / 6.10 m
Ends: Unarmoured
Main Belt covers 100 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 18.0" / 457 mm 12.0" / 305 mm 18.0" / 457 mm
2nd: 4.00" / 102 mm 4.00" / 102 mm 4.00" / 102 mm
- Armour deck: 9.00" / 229 mm, Conning tower: 18.00" / 457 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 8 shafts, 440,514 shp / 328,624 Kw = 32.00 kts
Range 12,000nm at 15.00 kts
Bunker at max displacement = 19,571 tons
Complement:
4,583 - 5,959
Cost:
£49.349 million / $197.396 million
Distribution of weights at normal displacement:
Armament: 10,556 tons, 5.5 %
Armour: 59,807 tons, 31.2 %
- Belts: 13,658 tons, 7.1 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 13,637 tons, 7.1 %
- Armour Deck: 31,222 tons, 16.3 %
- Conning Tower: 1,290 tons, 0.7 %
Machinery: 14,723 tons, 7.7 %
Hull, fittings & equipment: 87,369 tons, 45.5 %
Fuel, ammunition & stores: 19,418 tons, 10.1 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
310,609 lbs / 140,890 Kg = 44.9 x 24.0 " / 610 mm shells or 11.8 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 15.2 ft / 4.6 m
Roll period: 19.4 seconds
Steadiness - As gun platform (Average = 50 %): 68 %
- Recoil effect (Restricted arc if above 1.00): 0.77
Seaboat quality (Average = 1.00): 1.36
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.658
Length to Beam Ratio: 7.50 : 1
'Natural speed' for length: 36.74 kts
Power going to wave formation at top speed: 43 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 2.00 degrees
Stern overhang: 3.00 ft / 0.91 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 42.00 ft / 12.80 m
- Forecastle (20 %): 37.00 ft / 11.28 m
- Mid (0 %): 37.00 ft / 11.28 m
- Quarterdeck (15 %): 37.00 ft / 11.28 m
- Stern: 37.00 ft / 11.28 m
- Average freeboard: 37.40 ft / 11.40 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 66.7 %
- Above water (accommodation/working, high = better): 288.4 %
Waterplane Area: 187,520 Square feet or 17,421 Square metres
Displacement factor (Displacement / loading): 110 %
Structure weight / hull surface area: 359 lbs/sq ft or 1,754 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
Good seaboat, rides out heavy weather easily
Warning: Calibre too large - Main battery
This is a forum for discussion of topics relating to the Dreadnought era, prior to the ascendency of naval aviation. We will be discussing history, ship design, and naval wargaming.
Sunday, January 09, 2005
I thought it would be interesting to see a "Maximum Battleship"
My concept of a "Maximum Battleship" includes 24in guns. Such weapons were perfectly possible. The Germans could and did build guns of that order of size or bigger. I would use quadruple turrets, as well, so I could have 12-24in/45 guns. The secondary armament of 24-5in/50 seems too small, but that is what I chose. I only used an 18in armor basis. 32 knots was easy to achieve. The only thing I can see wrong is that Springsharp doesn't like the idea of a 24in gun. Either that, or there is some fault in my design that makes it not work with a 24in gun, but I can't tell that from the report.
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