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
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.
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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