Ger/BB/1906, Germany Battleship laid down 1906
Displacement:
17,607 t light; 18,485 t standard; 21,014 t normal; 23,038 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(489.00 ft / 489.00 ft) x 89.00 ft x (26.00 / 28.12 ft)
(149.05 m / 149.05 m) x 27.13 m x (7.92 / 8.57 m)
Armament:
8 - 12.00" / 305 mm 45.0 cal guns - 871.38lbs / 395.25kg shells, 90 per gun
Breech loading guns in turret on barbette mounts, 1906 Model
4 x Twin mounts on centreline ends, evenly spread
2 raised mounts - superfiring
12 - 6.00" / 152 mm 45.0 cal guns - 108.93lbs / 49.41kg shells, 150 per gun
Quick firing guns in casemate mounts, 1906 Model
12 x Single mounts on sides, evenly spread
Weight of broadside 8,278 lbs / 3,755 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.0" / 305 mm 325.00 ft / 99.06 m 8.00 ft / 2.44 m
Ends: 5.00" / 127 mm 164.00 ft / 49.99 m 12.00 ft / 3.66 m
Upper: 8.00" / 203 mm 325.00 ft / 99.06 m 8.00 ft / 2.44 m
Main Belt covers 102 % of normal length
- Torpedo Bulkhead - Additional damage containing bulkheads:
1.50" / 38 mm 320.00 ft / 97.54 m 26.00 ft / 7.92 m
Beam between torpedo bulkheads 59.00 ft / 17.98 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 12.0" / 305 mm 8.00" / 203 mm 12.0" / 305 mm
2nd: 6.00" / 152 mm 4.00" / 102 mm 6.00" / 152 mm
- Armoured deck - multiple decks:
For and Aft decks: 3.00" / 76 mm
Forecastle: 2.00" / 51 mm Quarter deck: 2.00" / 51 mm
- Conning towers: Forward 12.00" / 305 mm, Aft 8.00" / 203 mm
Machinery:
Coal fired boilers, steam turbines,
Direct drive, 4 shafts, 30,859 shp / 23,021 Kw = 21.00 kts
Range 4,200nm at 15.00 kts
Bunker at max displacement = 4,553 tons (100% coal)
Complement:
872 - 1,134
Cost:
£1.637 million / $6.549 million
Distribution of weights at normal displacement:
Armament: 1,462 tons, 7.0 %
- Guns: 1,462 tons, 7.0 %
Armour: 7,294 tons, 34.7 %
- Belts: 2,691 tons, 12.8 %
- Torpedo bulkhead: 462 tons, 2.2 %
- Armament: 2,112 tons, 10.1 %
- Armour Deck: 1,701 tons, 8.1 %
- Conning Towers: 328 tons, 1.6 %
Machinery: 2,204 tons, 10.5 %
Hull, fittings & equipment: 6,647 tons, 31.6 %
Fuel, ammunition & stores: 3,407 tons, 16.2 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
33,257 lbs / 15,085 Kg = 38.5 x 12.0 " / 305 mm shells or 5.7 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 6.1 ft / 1.9 m
Roll period: 15.1 seconds
Steadiness - As gun platform (Average = 50 %): 68 %
- Recoil effect (Restricted arc if above 1.00): 0.53
Seaboat quality (Average = 1.00): 1.35
Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.650 / 0.659
Length to Beam Ratio: 5.49 : 1
'Natural speed' for length: 22.11 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: -3.00 ft / -0.91 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 25.00 %, 24.00 ft / 7.32 m, 21.00 ft / 6.40 m
- Forward deck: 30.00 %, 21.00 ft / 6.40 m, 19.00 ft / 5.79 m
- Aft deck: 25.00 %, 19.00 ft / 5.79 m, 18.00 ft / 5.49 m
- Quarter deck: 20.00 %, 18.00 ft / 5.49 m, 17.50 ft / 5.33 m
- Average freeboard: 19.73 ft / 6.01 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 98.7 %
- Above water (accommodation/working, high = better): 140.7 %
Waterplane Area: 33,340 Square feet or 3,097 Square metres
Displacement factor (Displacement / loading): 114 %
Structure weight / hull surface area: 159 lbs/sq ft or 774 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.85
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
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.
Thursday, August 21, 2008
Oops, the Ger/BB/1906 with coal on board
I reader pointed out that I had neglected to give the Ger/BB/1906 battleship design a range and the associated coal in bunkers. Last night, I reran Springsharp to correct the problem:
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