Ger/CB/1912, Germany Battlecruiser laid down 1912 (Engine 1917)
Displacement:
26,947 t light; 27,966 t standard; 30,305 t normal; 32,176 t full load
Dimensions: Length overall / water x beam x draught
700.00 ft / 700.00 ft x 95.00 ft x 29.00 ft (normal load)
213.36 m / 213.36 m x 28.96 m x 8.84 m
Armament:
8 - 12.20" / 310 mm guns (4x2 guns), 944.00lbs / 428.19kg shells, 1912 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
14 - 6.00" / 152 mm guns in single mounts, 106.00lbs / 48.08kg shells, 1912 Model
Quick firing guns in casemate mounts
on side, evenly spread
Weight of broadside 9,036 lbs / 4,099 kg
Shells per gun, main battery: 80
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 11.0" / 279 mm 460.00 ft / 140.21 m 17.00 ft / 5.18 m
Ends: 5.00" / 127 mm 240.00 ft / 73.15 m 17.00 ft / 5.18 m
Main Belt covers 101 % of normal length
- Torpedo Bulkhead:
2.00" / 51 mm 460.00 ft / 140.21 m 26.00 ft / 7.92 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 12.0" / 305 mm 7.00" / 178 mm 11.0" / 279 mm
2nd: 4.00" / 102 mm 4.00" / 102 mm 4.00" / 102 mm
- Armour deck: 3.00" / 76 mm, Conning tower: 11.00" / 279 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 112,517 shp / 83,937 Kw = 29.00 kts
Range 7,500nm at 15.00 kts
Bunker at max displacement = 4,211 tons
Complement:
1,147 - 1,492
Cost:
£2.442 million / $9.768 million
Distribution of weights at normal displacement:
Armament: 1,097 tons, 3.6 %
Armour: 10,464 tons, 34.5 %
- Belts: 4,442 tons, 14.7 %
- Torpedo bulkhead: 885 tons, 2.9 %
- Armament: 2,330 tons, 7.7 %
- Armour Deck: 2,576 tons, 8.5 %
- Conning Tower: 230 tons, 0.8 %
Machinery: 4,125 tons, 13.6 %
Hull, fittings & equipment: 11,262 tons, 37.2 %
Fuel, ammunition & stores: 3,358 tons, 11.1 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
48,788 lbs / 22,130 Kg = 53.7 x 12.2 " / 310 mm shells or 7.2 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 6.3 ft / 1.9 m
Roll period: 15.9 seconds
Steadiness - As gun platform (Average = 50 %): 68 %
- Recoil effect (Restricted arc if above 1.00): 0.50
Seaboat quality (Average = 1.00): 1.36
Hull form characteristics:
Hull has raised forecastle, rise forward of midbreak, raised quarterdeck
Block coefficient: 0.550
Length to Beam Ratio: 7.37 : 1
'Natural speed' for length: 26.46 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 30.00 ft / 9.14 m
- Forecastle (20 %): 28.00 ft / 8.53 m (27.00 ft / 8.23 m aft of break)
- Mid (50 %): 26.00 ft / 7.92 m (25.00 ft / 7.62 m aft of break)
- Quarterdeck (15 %): 26.00 ft / 7.92 m (25.00 ft / 7.62 m before break)
- Stern: 27.00 ft / 8.23 m
- Average freeboard: 26.44 ft / 8.06 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 90.8 %
- Above water (accommodation/working, high = better): 198.0 %
Waterplane Area: 46,410 Square feet or 4,312 Square metres
Displacement factor (Displacement / loading): 110 %
Structure weight / hull surface area: 163 lbs/sq ft or 797 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.58
- 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.
Friday, July 01, 2005
A comparable German battlecruiser for 1912
The Ger/CB/1912 is the battlecruiser analog to the fast battleship design for 1912. They both are flush-decked and have twin stacks with funnel casings. The armament for the battlecruiser is identical: 8-12.2in BLR and 14-6in QF guns. Admittedly, they both "cheat" by using higher power output machinery. This is the Springsharp report:
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