Ger/CB/1935 16in guns-Alternative, Germany Battlecruiser laid down 1935
Displacement:
43,829 t light; 46,597 t standard; 49,467 t normal; 51,763 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(829.41 ft / 820.00 ft) x 115.00 ft x (30.00 / 31.15 ft)
(252.81 m / 249.94 m) x 35.05 m x (9.14 / 9.50 m)
Armament:
9 - 16.00" / 406 mm 50.0 cal guns - 2,170.00lbs / 984.30kg shells, 150 per gun
Breech loading guns in turret on barbette mounts , 1935 Model
3 x Triple mounts on centreline ends, majority forward
1 raised mount - superfiring
12 - 6.00" / 152 mm 55.0 cal guns - 115.00lbs / 52.16kg shells, 150 per gun
Quick firing guns in deck and hoist mounts , 1935 Model
12 x Single mounts on sides, evenly spread
12 - 4.00" / 102 mm 45.0 cal guns - 32.27lbs / 14.64kg shells, 150 per gun
Anti-air guns in deck mount , 1935 Model
1 x Single mount on sides amidships
32 - 1.46" / 37.0 mm 60.0 cal guns - 1.69lbs / 0.77kg shells, 150 per gun
Anti-air guns in deck mounts , 1935 Model
8 x Single mounts on sides, evenly spread
7 raised mounts
Weight of broadside 21,351 lbs / 21,351 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14.0" / 356 mm 540.00 ft / 164.59 m 8.00 ft / 2.44 m
Ends: Unarmoured
Upper: 11.0" / 279 mm 540.00 ft / 164.59 m 8.00 ft / 2.44 m
Main Belt covers 101 % of normal length
- Torpedo Bulkhead:
4.00" / 102 mm 540.00 ft / 164.59 m 30.00 ft / 9.14 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 14.0" / 356 mm 10.0" / 254 mm 14.0" / 356 mm
2nd: 4.00" / 102 mm 1.00" / 25 mm 4.00" / 102 mm
- Armour deck: 4.00" / 102 mm, Conning tower: 14.00" / 356 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 149,341 shp / 111,409 Kw = 29.00 kts
Range 8,500nm at 15.00 kts
Bunker at max displacement = 5,166 tons
Complement:
1,658 - 2,156
Cost:
£22.063 million / $88.252 million
Distribution of weights at normal displacement:
Armament: 4,060 tons, 8.2 %
Armour: 16,433 tons, 33.2 %
- Belts: 4,661 tons, 9.4 %
- Torpedo bulkhead: 2,398 tons, 4.8 %
- Armament: 3,806 tons, 7.7 %
- Armour Deck: 5,161 tons, 10.4 %
- Conning Tower: 406 tons, 0.8 %
Machinery: 4,243 tons, 8.6 %
Hull, fittings & equipment: 20,527 tons, 41.5 %
Fuel, ammunition & stores: 5,638 tons, 11.4 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
77,822 lbs / 35,300 Kg = 38.0 x 16.0 " / 406 mm shells or 13.6 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 8.6 ft / 2.6 m
Roll period: 16.5 seconds
Steadiness - As gun platform (Average = 50 %): 62 %
- Recoil effect (Restricted arc if above 1.00): 0.61
Seaboat quality (Average = 1.00): 1.25
Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.612 / 0.617
Length to Beam Ratio: 7.13 : 1
'Natural speed' for length: 28.64 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 11.00 degrees
Stern overhang: 3.00 ft / 0.91 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 33.00 ft / 10.06 m, 27.00 ft / 8.23 m
- Forward deck: 30.00 %, 27.00 ft / 8.23 m, 24.00 ft / 7.32 m
- Aft deck: 30.00 %, 24.00 ft / 7.32 m, 25.00 ft / 7.62 m
- Quarter deck: 20.00 %, 25.00 ft / 7.62 m, 26.00 ft / 7.92 m
- Average freeboard: 25.98 ft / 7.92 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 84.1 %
- Above water (accommodation/working, high = better): 200.3 %
Waterplane Area: 69,746 Square feet or 6,480 Square metres
Displacement factor (Displacement / loading): 108 %
Structure weight / hull surface area: 217 lbs/sq ft or 1,060 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.30
- 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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Sunday, April 29, 2007
An alternative design for a 16in-gunned Ger/BB/1935
There are many alternatives in the Ger/BB/1935 family of designs. One is for a narrower 16-in gunned ship. Otherwise, the ship is similar to the other, but has a somewhat longer belt that offers better coverage. This family of designs is more complete, since I have included the light AA guns. This is the Springsharp report:
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