GB/CA/1905, Great Britain Armored Cruiser laid down 1905 (Engine 1914)
Displacement:
16,384 t light; 17,349 t standard; 19,602 t normal; 21,405 t full load
Dimensions: Length overall / water x beam x draught
565.00 ft / 565.00 ft x 84.00 ft x 26.00 ft (normal load)
172.21 m / 172.21 m x 25.60 m x 7.92 m
Armament:
16 - 9.20" / 234 mm guns (8x2 guns), 389.34lbs / 176.60kg shells, 1905 Model
Breech loading guns in turrets (on barbettes)
on side ends, evenly spread, all raised mounts - superfiring
16 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model
Quick firing guns in casemate mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 6,742 lbs / 3,058 kg
Shells per gun, main battery: 150
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.00" / 152 mm 320.00 ft / 97.54 m 17.00 ft / 5.18 m
Ends: 4.00" / 102 mm 230.00 ft / 70.10 m 17.00 ft / 5.18 m
15.00 ft / 4.57 m Unarmoured ends
Main Belt covers 87 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
1.50" / 38 mm 320.00 ft / 97.54 m 24.00 ft / 7.32 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 6.00" / 152 mm 4.00" / 102 mm 6.00" / 152 mm
2nd: 2.00" / 51 mm - -
- Armour deck: 2.50" / 64 mm, Conning tower: 6.00" / 152 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 52,378 shp / 39,074 Kw = 25.00 kts
Range 8,500nm at 15.00 kts
Bunker at max displacement = 4,056 tons
Complement:
827 - 1,076
Cost:
£1.564 million / $6.255 million
Distribution of weights at normal displacement:
Armament: 843 tons, 4.3 %
Armour: 5,872 tons, 30.0 %
- Belts: 2,040 tons, 10.4 %
- Torpedo bulkhead: 426 tons, 2.2 %
- Armament: 1,771 tons, 9.0 %
- Armour Deck: 1,541 tons, 7.9 %
- Conning Tower: 94 tons, 0.5 %
Machinery: 2,018 tons, 10.3 %
Hull, fittings & equipment: 7,652 tons, 39.0 %
Fuel, ammunition & stores: 3,218 tons, 16.4 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
31,049 lbs / 14,084 Kg = 79.7 x 9.2 " / 234 mm shells or 5.1 torpedoes
Stability (Unstable if below 1.00): 1.03
Metacentric height 4.1 ft / 1.2 m
Roll period: 17.5 seconds
Steadiness - As gun platform (Average = 50 %): 64 %
- Recoil effect (Restricted arc if above 1.00): 0.82
Seaboat quality (Average = 1.00): 1.28
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.556
Length to Beam Ratio: 6.73 : 1
'Natural speed' for length: 23.77 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -2.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.00 ft / 8.53 m
- Forecastle (20 %): 25.00 ft / 7.62 m
- Mid (67 %): 25.00 ft / 7.62 m (17.00 ft / 5.18 m aft of break)
- Quarterdeck (15 %): 17.00 ft / 5.18 m
- Stern: 17.00 ft / 5.18 m
- Average freeboard: 22.60 ft / 6.89 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 88.4 %
- Above water (accommodation/working, high = better): 174.8 %
Waterplane Area: 33,309 Square feet or 3,094 Square metres
Displacement factor (Displacement / loading): 118 %
Structure weight / hull surface area: 156 lbs/sq ft or 759 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.69
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily
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Saturday, April 30, 2005
A British armored cruiser design
This is similar to one of the altenative designs being considered in 1904-1905. This is like an armored cruiser version of the Untakeable battleship design. The armament is 9.2 in guns with an anti-torpedo boat armament of 4in QF guns. This is the Springsharp report:
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