GB/BB/1927, Great Britain Battleship laid down 1927
Displacement:
60,794 t light; 63,666 t standard; 67,500 t normal; 70,567 t full load
Dimensions: Length overall / water x beam x draught
930.52 ft / 925.00 ft x 125.00 ft x 35.00 ft (normal load)
283.62 m / 281.94 m x 38.10 m x 10.67 m
Armament:
8 - 20.00" / 508 mm guns (2x4 guns), 4,000.00lbs / 1,814.37kg shells, 1927 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 1 raised mount
16 - 6.00" / 152 mm guns (6 mounts), 108.00lbs / 48.99kg shells, 1927 Model
Quick firing guns in turrets (on barbettes)
on side ends, evenly spread
6 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1927 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
Weight of broadside 33,920 lbs / 15,386 kg
Shells per gun, main battery: 80
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 16.0" / 406 mm 560.00 ft / 170.69 m 17.00 ft / 5.18 m
Ends: Unarmoured
Main Belt covers 93 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 18.0" / 457 mm 10.0" / 254 mm 16.0" / 406 mm
2nd: 6.00" / 152 mm 6.00" / 152 mm 6.00" / 152 mm
3rd: 2.00" / 51 mm - -
- Armour deck: 6.00" / 152 mm, Conning tower: 16.00" / 406 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 129,971 shp / 96,958 Kw = 27.00 kts
Range 8,750nm at 15.00 kts
Bunker at max displacement = 6,900 tons
Complement:
2,093 - 2,722
Cost:
£22.777 million / $91.109 million
Distribution of weights at normal displacement:
Armament: 4,240 tons, 6.3 %
Armour: 21,805 tons, 32.3 %
- Belts: 6,650 tons, 9.9 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5,338 tons, 7.9 %
- Armour Deck: 9,245 tons, 13.7 %
- Conning Tower: 571 tons, 0.8 %
Machinery: 4,103 tons, 6.1 %
Hull, fittings & equipment: 30,647 tons, 45.4 %
Fuel, ammunition & stores: 6,706 tons, 9.9 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
102,633 lbs / 46,554 Kg = 25.7 x 20.0 " / 508 mm shells or 6.5 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 8.1 ft / 2.5 m
Roll period: 18.4 seconds
Steadiness - As gun platform (Average = 50 %): 75 %
- Recoil effect (Restricted arc if above 1.00): 0.91
Seaboat quality (Average = 1.00): 1.50
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.584
Length to Beam Ratio: 7.40 : 1
'Natural speed' for length: 30.41 kts
Power going to wave formation at top speed: 42 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 4.00 degrees
Stern overhang: 3.00 ft / 0.91 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 36.00 ft / 10.97 m
- Forecastle (20 %): 27.00 ft / 8.23 m
- Mid (50 %): 27.00 ft / 8.23 m
- Quarterdeck (15 %): 27.00 ft / 8.23 m
- Stern: 27.00 ft / 8.23 m
- Average freeboard: 27.72 ft / 8.45 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 66.7 %
- Above water (accommodation/working, high = better): 204.7 %
Waterplane Area: 83,292 Square feet or 7,738 Square metres
Displacement factor (Displacement / loading): 106 %
Structure weight / hull surface area: 267 lbs/sq ft or 1,304 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.43
- 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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Monday, August 29, 2005
My ideas in the mid-to-late 1970's for a large battleship
In the 1970's, I was very interested in reducing the length of the armored citadel in battleships and battlecruisers. This is a design study that I did in the mid-to-late 1970's for a battleship with 27 knot speed and 8-20in/45 guns. The armor basis is only 16in. The dimensions are 935ft x 125ft x 35ft. There are two quadruple turrets forward, with the second superfiring the first. The secondary armament is at the upper deck level with 6-4in AA guns a level higher. The bridge structure is vaguely influenced byu the Richelieu, as is the armament layout. This is the Stringsharp report:
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