GB/CA/1932, Great Britain Heavy Cruiser laid down 1932 (Engine 1950)
Displacement:
14,068 t light; 14,656 t standard; 15,974 t normal; 17,029 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(671.00 ft / 665.00 ft) x 68.00 ft x (22.00 / 23.11 ft)
(204.52 m / 202.69 m) x 20.73 m x (6.71 / 7.04 m)
Armament:
10 - 8.00" / 203 mm 50.0 cal guns - 250.00lbs / 113.40kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1932 Model
5 x Twin mounts on centreline ends, majority forward
2 raised mounts - superfiring
12 - 4.00" / 102 mm 45.0 cal guns - 32.27lbs / 14.64kg shells, 150 per gun
Anti-air guns in deck and hoist mounts, 1932 Model
6 x Twin mounts on sides, forward deck aft
24 - 1.57" / 40.0 mm 45.0 cal guns - 1.97lbs / 0.89kg shells, 150 per gun
Anti-air guns in deck mounts, 1932 Model
4 x 2 row sextuple mounts on sides, aft deck forward
4 raised mounts
Weight of broadside 2,935 lbs / 1,331 kg
16 - 21.0" / 533 mm, 22.00 ft / 6.71 m torpedoes - 1.469 t each, 23.507 t total
In 4 sets of deck mounted side rotating tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.00" / 102 mm 460.00 ft / 140.21 m 16.00 ft / 4.88 m
Ends: Unarmoured
Main Belt covers 106 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
0.90" / 23 mm 460.00 ft / 140.21 m 22.00 ft / 6.71 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.00" / 102 mm 3.00" / 76 mm 4.00" / 102 mm
- Armoured deck - multiple decks: 2.00" / 51 mm For and Aft decks
Forecastle: 2.00" / 51 mm Quarter deck: 2.00" / 51 mm
- Conning towers: Forward 4.00" / 102 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 155,091 shp / 115,698 Kw = 36.00 kts
Range 6,500nm at 17.00 kts
Bunker at max displacement = 2,374 tons
Complement:
709 - 923
Cost:
£6.067 million / $24.267 million
Distribution of weights at normal displacement:
Armament: 797 tons, 5.0 %
- Guns: 773 tons, 4.8 %
- Torpedoes: 24 tons, 0.1 %
Armour: 3,392 tons, 21.2 %
- Belts: 1,207 tons, 7.6 %
- Torpedo bulkhead: 337 tons, 2.1 %
- Armament: 555 tons, 3.5 %
- Armour Deck: 1,239 tons, 7.8 %
- Conning Tower: 55 tons, 0.3 %
Machinery: 3,710 tons, 23.2 %
Hull, fittings & equipment: 6,169 tons, 38.6 %
Fuel, ammunition & stores: 1,906 tons, 11.9 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
21,782 lbs / 9,880 Kg = 85.1 x 8.0 " / 203 mm shells or 2.7 torpedoes
Stability (Unstable if below 1.00): 1.09
Metacentric height 3.3 ft / 1.0 m
Roll period: 15.7 seconds
Steadiness - As gun platform (Average = 50 %): 53 %
- Recoil effect (Restricted arc if above 1.00): 0.60
Seaboat quality (Average = 1.00): 1.06
Hull form characteristics:
Hull has rise forward of midbreak,
an extended bulbous bow and large transom stern
Block coefficient (normal/deep): 0.562 / 0.570
Length to Beam Ratio: 9.78 : 1
'Natural speed' for length: 29.28 kts
Power going to wave formation at top speed: 61 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 32.00 %, 34.00 ft / 10.36 m, 28.00 ft / 8.53 m
- Forward deck: 30.00 %, 28.00 ft / 8.53 m, 28.00 ft / 8.53 m
- Aft deck: 23.00 %, 20.00 ft / 6.10 m, 20.00 ft / 6.10 m
- Quarter deck: 15.00 %, 20.00 ft / 6.10 m, 20.00 ft / 6.10 m
- Average freeboard: 25.73 ft / 7.84 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 133.5 %
- Above water (accommodation/working, high = better): 215.5 %
Waterplane Area: 33,236 Square feet or 3,088 Square metres
Displacement factor (Displacement / loading): 115 %
Structure weight / hull surface area: 120 lbs/sq ft or 586 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.73
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
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.
Tuesday, January 01, 2008
A 36 knot heavy cruiser
This is the heavy cruiser counterpart to the 37 knot light cruiser. The heavy cruiser has 4in side armour and 10-8in/50 guns. The speed had to be reduced to 36 knots, which is still comparable to the big Japanese cruisers. This is the Springsharp report:
No comments:
Post a Comment