GB/CB/1921 14in guns 38 knots, Great Britain Battlecruiser laid down 1923 (Engine 1940)
Displacement:
43,543 t light; 45,203 t standard; 48,500 t normal; 51,137 t full load
Dimensions: Length overall / water x beam x draught
881.32 ft / 878.00 ft x 114.00 ft x 33.00 ft (normal load)
268.63 m / 267.61 m x 34.75 m x 10.06 m
Armament:
9 - 14.00" / 356 mm guns (3x3 guns), 1,372.00lbs / 622.33kg shells, 1923 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
16 - 4.70" / 119 mm guns (6 mounts), 51.91lbs / 23.55kg shells, 1923 Model
Quick firing guns in turrets (on barbettes)
on side, all amidships, 4 raised mounts - superfiring
6 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1923 Model
Anti-aircraft guns in deck mounts with hoists
on side, all amidships, all raised mounts - superfiring
24 - 1.57" / 40.0 mm guns (6x4 guns), 1.95lbs / 0.89kg shells, 1923 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
Weight of broadside 13,537 lbs / 6,140 kg
Shells per gun, main battery: 90
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 7.00" / 178 mm 580.00 ft / 176.78 m 16.00 ft / 4.88 m
Ends: Unarmoured
Main Belt covers 102 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
1.00" / 25 mm 580.00 ft / 176.78 m 33.00 ft / 10.06 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.00" / 229 mm 6.00" / 152 mm 9.00" / 229 mm
2nd: 3.00" / 76 mm 3.00" / 76 mm 3.00" / 76 mm
- Armour deck: 4.00" / 102 mm, Conning tower: 9.00" / 229 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 6 shafts, 337,652 shp / 251,888 Kw = 38.00 kts
Range 7,500nm at 18.00 kts
Bunker at max displacement = 5,934 tons
Complement:
1,633 - 2,124
Cost:
£12.245 million / $48.981 million
Distribution of weights at normal displacement:
Armament: 1,692 tons, 3.5 %
Armour: 11,812 tons, 24.4 %
- Belts: 2,763 tons, 5.7 %
- Torpedo bulkhead: 708 tons, 1.5 %
- Armament: 2,884 tons, 5.9 %
- Armour Deck: 5,200 tons, 10.7 %
- Conning Tower: 258 tons, 0.5 %
Machinery: 9,028 tons, 18.6 %
Hull, fittings & equipment: 21,010 tons, 43.3 %
Fuel, ammunition & stores: 4,957 tons, 10.2 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
69,860 lbs / 31,688 Kg = 50.9 x 14.0 " / 356 mm shells or 8.0 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 8.0 ft / 2.4 m
Roll period: 16.9 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.49
Seaboat quality (Average = 1.00): 1.03
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.514
Length to Beam Ratio: 7.70 : 1
'Natural speed' for length: 34.49 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 38.00 ft / 11.58 m
- Forecastle (20 %): 32.00 ft / 9.75 m
- Mid (35 %): 32.00 ft / 9.75 m
- Quarterdeck (15 %): 32.00 ft / 9.75 m
- Stern: 32.00 ft / 9.75 m
- Average freeboard: 32.48 ft / 9.90 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 105.3 %
- Above water (accommodation/working, high = better): 262.3 %
Waterplane Area: 70,264 Square feet or 6,528 Square metres
Displacement factor (Displacement / loading): 112 %
Structure weight / hull surface area: 206 lbs/sq ft or 1,008 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.65
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
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Thursday, November 30, 2006
"Up to my old tricks": a 38 knot ship with 9-14in guns
I could not resist doing my usual thing ("My old tricks"). I tried a 38 knot battlecruiser with 9-14in guns. The belt is 7in and the deck is 4in. The secondary and AA armaments are what I have been using. They are unchanged from the other ships in this series. I still like having a big ship that will outrun smaller ships in a seaway. There is essentially nothing at sea that this ship cannot catch. Some smaller ships may be faster in a flat calm, for a short time, but in normal conditions, they will not be able to run away. This ship can outrun anything, but aircraft, that could damage it. This is the Springsharp report:
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