Ger/BB/1941, Germany Battleship laid down 1941
Displacement:
98,464 t light; 103,005 t standard; 114,651 t normal; 123,968 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(1,108.93 ft / 1,100.00 ft) x 150.00 ft x (38.00 / 40.60 ft)
(338.00 m / 335.28 m) x 45.72 m x (11.58 / 12.38 m)
Armament:
9 - 21.00" / 533 mm 45.0 cal guns - 4,670.00lbs / 2,118.28kg shells, 90 per gun
Breech loading guns in turret on barbette mounts , 1941 Model
3 x Triple mounts on centreline ends, majority forward
1 raised mount - superfiring
12 - 6.00" / 152 mm 55.0 cal guns - 116.00lbs / 52.62kg shells, 150 per gun
Quick firing guns in turret on barbette mounts , 1941 Model
6 x Twin mounts on sides, forward deck aft
8 - 4.00" / 102 mm 60.0 cal guns - 35.00lbs / 15.88kg shells, 150 per gun
Anti-air guns in deck and hoist mounts , 1941 Model
4 x Twin mounts on sides, forward deck aft
4 raised mounts
44 - 1.57" / 40.0 mm 60.0 cal guns - 2.00lbs / 0.91kg shells, 150 per gun
Breech loading guns in deck mounts , 1941 Model
5 x 2 row quad mounts on centreline, evenly spread
2 raised mounts
6 x 2 row quad mounts on sides amidships
4 raised mounts
Weight of broadside 43,790 lbs / 43,790 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 17.0" / 432 mm 670.00 ft / 204.22 m 16.00 ft / 4.88 m
Ends: Unarmoured
Main Belt covers 94 % of normal length
- Torpedo Bulkhead:
7.00" / 178 mm 670.00 ft / 204.22 m 38.00 ft / 11.58 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 17.0" / 432 mm 12.0" / 305 mm 17.0" / 432 mm
2nd: 6.00" / 152 mm 4.00" / 102 mm 6.00" / 152 mm
3rd: 1.00" / 25 mm - 1.00" / 25 mm
- Armour deck: 7.00" / 178 mm, Conning tower: 17.00" / 432 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 297,825 shp / 222,177 Kw = 31.00 kts
Range 15,000nm at 18.00 kts
Bunker at max displacement = 20,963 tons
Complement:
3,114 - 4,049
Cost:
£53.585 million / $214.341 million
Distribution of weights at normal displacement:
Armament: 6,537 tons, 5.7 %
Armour: 40,125 tons, 35.0 %
- Belts: 7,979 tons, 7.0 %
- Torpedo bulkhead: 6,594 tons, 5.8 %
- Armament: 8,469 tons, 7.4 %
- Armour Deck: 16,219 tons, 14.1 %
- Conning Tower: 864 tons, 0.8 %
Machinery: 7,871 tons, 6.9 %
Hull, fittings & equipment: 45,564 tons, 39.7 %
Fuel, ammunition & stores: 16,187 tons, 14.1 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
231,824 lbs / 105,153 Kg = 50.1 x 21.0 " / 533 mm shells or 57.9 torpedoes
Stability (Unstable if below 1.00): 1.26
Metacentric height 14.0 ft / 4.3 m
Roll period: 16.9 seconds
Steadiness - As gun platform (Average = 50 %): 74 %
- Recoil effect (Restricted arc if above 1.00): 0.57
Seaboat quality (Average = 1.00): 1.49
Hull form characteristics:
Hull has a flush deck,
an extended bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0.640 / 0.648
Length to Beam Ratio: 7.33 : 1
'Natural speed' for length: 33.17 kts
Power going to wave formation at top speed: 46 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 12.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 42.00 ft / 12.80 m, 33.00 ft / 10.06 m
- Forward deck: 30.00 %, 33.00 ft / 10.06 m, 31.00 ft / 9.45 m
- Aft deck: 35.00 %, 31.00 ft / 9.45 m, 32.00 ft / 9.75 m
- Quarter deck: 15.00 %, 32.00 ft / 9.75 m, 33.00 ft / 10.06 m
- Average freeboard: 32.82 ft / 10.00 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 63.7 %
- Above water (accommodation/working, high = better): 243.1 %
Waterplane Area: 125,243 Square feet or 11,635 Square metres
Displacement factor (Displacement / loading): 121 %
Structure weight / hull surface area: 273 lbs/sq ft or 1,332 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.18
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
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, June 13, 2007
I have this German-looking battleship design from March 1999
One of the small sketches a specifications in my record book, dating from early March 1999, is a large battleship with 9-21in guns and a speed of 31 knots. This is a 115,000 ton ship with a 17in armour basis and a 7in deck. This design, which I am calling the Ger/BB/1941, is a more complete specification that includes an AA armament. This is the Springsharp report:
No comments:
Post a Comment