Ger/CB/1912, Germany Battlecruiser laid down 1912 (Engine 1923)
Displacement:
34,585 t light; 35,859 t standard; 39,000 t normal; 41,513 t full load
Dimensions: Length overall / water x beam x draught
822.00 ft / 820.00 ft x 105.00 ft x 29.40 ft (normal load)
250.55 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 forward, 2 raised mounts - superfiring
Weight of broadside 10,989 lbs / 4,985 kg
Shells per gun, main battery: 80
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.00" / 152 mm 570.00 ft / 173.74 m 17.00 ft / 5.18 m
Ends: Unarmoured
Main Belt covers 107 % of normal length
- Torpedo Bulkhead:
2.00" / 51 mm 570.00 ft / 173.74 m 27.00 ft / 8.23 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.0" / 254 mm 6.00" / 152 mm 10.0" / 254 mm
2nd: 2.00" / 51 mm - -
- Armour deck: 5.00" / 127 mm, Conning tower: 8.00" / 203 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 181,614 shp / 135,484 Kw = 32.00 kts
Range 6,500nm at 18.00 kts
Bunker at max displacement = 5,653 tons
Complement:
1,386 - 1,803
Cost:
£3.214 million / $12.856 million
Distribution of weights at normal displacement:
Armament: 1,374 tons, 3.5 %
Armour: 11,200 tons, 28.7 %
- Belts: 2,450 tons, 6.3 %
- Torpedo bulkhead: 1,139 tons, 2.9 %
- Armament: 1,910 tons, 4.9 %
- Armour Deck: 5,502 tons, 14.1 %
- Conning Tower: 198 tons, 0.5 %
Machinery: 6,070 tons, 15.6 %
Hull, fittings & equipment: 15,941 tons, 40.9 %
Fuel, ammunition & stores: 4,415 tons, 11.3 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
59,178 lbs / 26,843 Kg = 35.1 x 15.0 " / 381 mm shells or 8.4 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 7.7 ft / 2.3 m
Roll period: 15.9 seconds
Steadiness - As gun platform (Average = 50 %): 63 %
- Recoil effect (Restricted arc if above 1.00): 0.47
Seaboat quality (Average = 1.00): 1.26
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.539
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: 2.00 ft / 0.61 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 (59 %): 30.00 ft / 9.14 m (20.00 ft / 6.10 m aft of break)
- Quarterdeck (15 %): 20.00 ft / 6.10 m
- Stern: 20.00 ft / 6.10 m
- Average freeboard: 26.30 ft / 8.02 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 95.3 %
- Above water (accommodation/working, high = better): 212.6 %
Waterplane Area: 59,486 Square feet or 5,526 Square metres
Displacement factor (Displacement / loading): 114 %
Structure weight / hull surface area: 188 lbs/sq ft or 917 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.40
- 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.
Sunday, July 03, 2005
The Ger/CB/1912 with lower power
The lower power output version of the Ger/CB/1912 design works pretty well in Springsharp. This is the ship of which I have a photo. The design has 6-15in guns forward, in two triple turrets. The secondary armament of 8-6in QF guns is grouped around the forward superstructure, and is in shields. The armour basis is 6 inches. The design speed for a modest power is 32 knots. This is the Springsharp report:
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