Ger/CB/1912, Germany Battlecruiser laid down 1912 (Engine 1927)
Displacement:
33,108 t light; 34,421 t standard; 37,800 t normal; 40,503 t full load
Dimensions: Length overall / water x beam x draught
823.00 ft / 820.00 ft x 105.00 ft x 29.40 ft (normal load)
250.85 m / 249.94 m x 32.00 m x 8.96 m
Armament:
6 - 15.00" / 381 mm guns (2x3 guns), 1,687.50lbs / 765.44kg shells, 1912 Model
Breech loading guns in turrets (on barbettes)
on centreline, all forward, 1 raised mount - superfiring
8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1912 Model
Quick firing guns in deck mounts with hoists
on side, all amidships, 2 raised mounts - superfiring
Weight of broadside 10,989 lbs / 4,985 kg
Shells per gun, main battery: 90
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.00" / 152 mm 400.00 ft / 121.92 m 16.00 ft / 4.88 m
Ends: Unarmoured
Main Belt covers 75 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
2.00" / 51 mm 400.00 ft / 121.92 m 29.00 ft / 8.84 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.0" / 254 mm 6.00" / 152 mm 10.0" / 254 mm
- Armour deck: 5.00" / 127 mm, Conning tower: 8.00" / 203 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 176,791 shp / 131,886 Kw = 32.00 kts
Range 7,500nm at 18.00 kts
Bunker at max displacement = 6,082 tons
Complement:
1,355 - 1,762
Cost:
£3.094 million / $12.376 million
Distribution of weights at normal displacement:
Armament: 1,374 tons, 3.6 %
Armour: 10,062 tons, 26.6 %
- Belts: 1,737 tons, 4.6 %
- Torpedo bulkhead: 858 tons, 2.3 %
- Armament: 1,854 tons, 4.9 %
- Armour Deck: 5,418 tons, 14.3 %
- Conning Tower: 194 tons, 0.5 %
Machinery: 5,581 tons, 14.8 %
Hull, fittings & equipment: 16,092 tons, 42.6 %
Fuel, ammunition & stores: 4,692 tons, 12.4 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
60,093 lbs / 27,258 Kg = 35.6 x 15.0 " / 381 mm shells or 8.3 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 7.5 ft / 2.3 m
Roll period: 16.1 seconds
Steadiness - As gun platform (Average = 50 %): 67 %
- Recoil effect (Restricted arc if above 1.00): 0.52
Seaboat quality (Average = 1.00): 1.34
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.523
Length to Beam Ratio: 7.81 : 1
'Natural speed' for length: 28.64 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 3.00 ft / 0.91 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 35.00 ft / 10.67 m
- Forecastle (20 %): 30.00 ft / 9.14 m
- Mid (62 %): 30.00 ft / 9.14 m (22.00 ft / 6.71 m aft of break)
- Quarterdeck (15 %): 22.00 ft / 6.71 m
- Stern: 22.00 ft / 6.71 m
- Average freeboard: 27.36 ft / 8.34 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 93.3 %
- Above water (accommodation/working, high = better): 223.7 %
Waterplane Area: 58,574 Square feet or 5,442 Square metres
Displacement factor (Displacement / loading): 117 %
Structure weight / hull surface area: 190 lbs/sq ft or 929 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.51
- 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
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.
Wednesday, August 09, 2006
The Ger/CB/1912 works pretty much like the original conception
The original concept for the Ger/CB/1912 battlecruiser design, dating from 1971, was for a 32,659 tons Standard displacement with dimensions of 820ft x 105ft x 29.4ft (max). The armament was 6-15in/45 in triple turrets, mounted forward, and a light secondary armament of 8-6in QF guns. The armour basis was 6in with 10in turrets and barbettes and a 5in deck. The target speed was 32 knots. This is the Springsharp report:
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