Ger/BB/1921 Fast Battleship, Germany Battleship laid down 1921
Displacement:
58,908 t light; 61,610 t standard; 65,728 t normal; 69,022 t full load
Dimensions: Length overall / water x beam x draught
866.19 ft / 865.00 ft x 125.00 ft x 36.00 ft (normal load)
264.01 m / 263.65 m x 38.10 m x 10.97 m
Armament:
9 - 18.00" / 457 mm guns (3x3 guns), 2,916.00lbs / 1,322.68kg shells, 1921 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, all raised mounts - superfiring
20 - 5.00" / 127 mm guns (2x10 guns), 62.50lbs / 28.35kg shells, 1921 Model
Quick firing guns in deck mounts with hoists
on side, evenly spread, all raised mounts
Weight of broadside 27,494 lbs / 12,471 kg
Shells per gun, main battery: 90
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 16.0" / 406 mm 562.00 ft / 171.30 m 17.00 ft / 5.18 m
Ends: Unarmoured
Main Belt covers 100 % of normal length
- Torpedo Bulkhead:
2.00" / 51 mm 562.00 ft / 171.30 m 31.00 ft / 9.45 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 16.0" / 406 mm 9.00" / 229 mm 14.0" / 356 mm
2nd: 2.00" / 51 mm - -
- Armour deck: 5.00" / 127 mm, Conning tower: 12.00" / 305 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 170,613 shp / 127,278 Kw = 30.00 kts
Range 9,600nm at 15.00 kts
Bunker at max displacement = 7,413 tons
Complement:
2,052 - 2,668
Cost:
£14.690 million / $58.761 million
Distribution of weights at normal displacement:
Armament: 3,437 tons, 5.2 %
Armour: 21,199 tons, 32.3 %
- Belts: 6,629 tons, 10.1 %
- Torpedo bulkhead: 1,289 tons, 2.0 %
- Armament: 5,301 tons, 8.1 %
- Armour Deck: 7,558 tons, 11.5 %
- Conning Tower: 421 tons, 0.6 %
Machinery: 5,875 tons, 8.9 %
Hull, fittings & equipment: 28,397 tons, 43.2 %
Fuel, ammunition & stores: 6,820 tons, 10.4 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
97,048 lbs / 44,020 Kg = 33.3 x 18.0 " / 457 mm shells or 14.7 torpedoes
Stability (Unstable if below 1.00): 1.04
Metacentric height 7.5 ft / 2.3 m
Roll period: 19.1 seconds
Steadiness - As gun platform (Average = 50 %): 62 %
- Recoil effect (Restricted arc if above 1.00): 0.83
Seaboat quality (Average = 1.00): 1.23
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.591
Length to Beam Ratio: 6.92 : 1
'Natural speed' for length: 34.24 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 2.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 34.00 ft / 10.36 m
- Forecastle (20 %): 29.00 ft / 8.84 m
- Mid (0 %): 28.00 ft / 8.53 m
- Quarterdeck (15 %): 28.00 ft / 8.53 m
- Stern: 28.00 ft / 8.53 m
- Average freeboard: 28.50 ft / 8.69 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 81.5 %
- Above water (accommodation/working, high = better): 211.2 %
Waterplane Area: 81,713 Square feet or 7,591 Square metres
Displacement factor (Displacement / loading): 109 %
Structure weight / hull surface area: 257 lbs/sq ft or 1,253 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.52
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
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.
Saturday, January 15, 2005
I thought I would try a German fast battleship from a sketch I had done way back
I have a sketch of a large, German fast battleship (30 knots) that I did way back. This is a ship with 9-18in and 20-5in guns. I had hoped to be able to do that on 50,000 tons, but with Springsharp, I had to go to 65,728 tons, normal displacement, to get a good ship. I had to guess at dimensions, as I don't see any on the drawing, itself. The ship has a vaguely Italian look with two funnels and a tower foremast with bridge structure around it. There is a pole foremast and a low pole mainmast.
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