Ger/CB/1912, Germany Battlecruiser laid down 1912 (Engine 1937)
Displacement:
35,706 t light; 36,996 t standard; 39,750 t normal; 41,953 t full load
Dimensions: Length overall / water x beam x draught
822.00 ft / 820.00 ft x 105.00 ft x 33.00 ft (normal load)
250.55 m / 249.94 m x 32.00 m x 10.06 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 560.00 ft / 170.69 m 17.00 ft / 5.18 m
Ends: Unarmoured
Main Belt covers 105 % of normal length
- Torpedo Bulkhead:
2.00" / 51 mm 560.00 ft / 170.69 m 28.00 ft / 8.53 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, 256,152 shp / 191,089 Kw = 35.00 kts
Range 6,500nm at 18.00 kts
Bunker at max displacement = 4,957 tons
Complement:
1,406 - 1,829
Cost:
£3.397 million / $13.590 million
Distribution of weights at normal displacement:
Armament: 1,374 tons, 3.5 %
Armour: 10,935 tons, 27.5 %
- Belts: 2,407 tons, 6.1 %
- Torpedo bulkhead: 1,160 tons, 2.9 %
- Armament: 1,910 tons, 4.8 %
- Armour Deck: 5,257 tons, 13.2 %
- Conning Tower: 201 tons, 0.5 %
Machinery: 7,100 tons, 17.9 %
Hull, fittings & equipment: 16,298 tons, 41.0 %
Fuel, ammunition & stores: 4,044 tons, 10.2 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
53,097 lbs / 24,084 Kg = 31.5 x 15.0 " / 381 mm shells or 7.1 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 7.4 ft / 2.2 m
Roll period: 16.3 seconds
Steadiness - As gun platform (Average = 50 %): 55 %
- Recoil effect (Restricted arc if above 1.00): 0.46
Seaboat quality (Average = 1.00): 1.10
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.490
Length to Beam Ratio: 7.81 : 1
'Natural speed' for length: 28.64 kts
Power going to wave formation at top speed: 56 %
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): 103.7 %
- Above water (accommodation/working, high = better): 200.2 %
Waterplane Area: 56,832 Square feet or 5,280 Square metres
Displacement factor (Displacement / loading): 110 %
Structure weight / hull surface area: 194 lbs/sq ft or 947 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
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Sunday, July 03, 2005
The higher power output version of the Ger/CB/1912 design can make 35 knots
The more radical recasting of the Ger/CB/1912 design can make 35 knots. I had thought that I would use 40 SHP/ton of machinery weight, although this is not that light, although it is 36 SHP/ton. To keep from having to balloon the displacement too much, I increased the draught, as this is a relatively cheap way to increase strength in Springsharp. This is the revised Springsharp report:
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