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
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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:
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