Ger/BB/1907 Design Study A1, Germany Battleship laid down 1907
Displacement:
24,685 t light; 25,871 t standard; 27,398 t normal; 28,618 t full load
Dimensions: Length overall / water x beam x draught
580.00 ft / 580.00 ft x 100.00 ft x 33.00 ft (normal load)
176.78 m / 176.78 m x 30.48 m x 10.06 m
Armament:
15 - 11.00" / 279 mm guns (5 mounts), 665.50lbs / 301.87kg shells, 1907 Model
Breech loading guns in turrets (on barbettes)
on centreline, evenly spread, 11 raised guns
12 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1907 Model
Quick firing guns in casemate mounts
on side, evenly spread, 6 raised mounts
6 guns in hull casemates - Limited use in heavy seas
Weight of broadside 11,279 lbs / 5,116 kg
Shells per gun, main battery: 100
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.0" / 305 mm 376.00 ft / 114.60 m 16.00 ft / 4.88 m
Ends: Unarmoured
Main Belt covers 100 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
2.00" / 51 mm 375.00 ft / 114.30 m 28.00 ft / 8.53 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 11.0" / 279 mm 6.00" / 152 mm 10.0" / 254 mm
2nd: 6.00" / 152 mm 4.00" / 102 mm 4.00" / 102 mm
- Armour deck: 2.50" / 64 mm, Conning tower: 9.00" / 229 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 63,228 shp / 47,168 Kw = 25.00 kts
Range 5,400nm at 12.00 kts
Bunker at max displacement = 2,747 tons
Complement:
1,064 - 1,384
Cost:
£2.551 million / $10.205 million
Distribution of weights at normal displacement:
Armament: 1,410 tons, 5.1 %
Armour: 8,942 tons, 32.6 %
- Belts: 3,167 tons, 11.6 %
- Torpedo bulkhead: 777 tons, 2.8 %
- Armament: 3,032 tons, 11.1 %
- Armour Deck: 1,789 tons, 6.5 %
- Conning Tower: 176 tons, 0.6 %
Machinery: 3,593 tons, 13.1 %
Hull, fittings & equipment: 10,741 tons, 39.2 %
Fuel, ammunition & stores: 2,713 tons, 9.9 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
32,510 lbs / 14,746 Kg = 48.9 x 11.0 " / 279 mm shells or 5.2 torpedoes
Stability (Unstable if below 1.00): 1.01
Metacentric height 5.1 ft / 1.6 m
Roll period: 18.5 seconds
Steadiness - As gun platform (Average = 50 %): 67 %
- Recoil effect (Restricted arc if above 1.00): 0.69
Seaboat quality (Average = 1.00): 1.34
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.501
Length to Beam Ratio: 5.80 : 1
'Natural speed' for length: 24.08 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: -2.00 ft / -0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.00 ft / 8.53 m
- Forecastle (20 %): 28.00 ft / 8.53 m
- Mid (43 %): 28.00 ft / 8.53 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: 23.44 ft / 7.14 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 101.9 %
- Above water (accommodation/working, high = better): 158.1 %
Waterplane Area: 38,679 Square feet or 3,593 Square metres
Displacement factor (Displacement / loading): 100 %
Structure weight / hull surface area: 189 lbs/sq ft or 922 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.21
- 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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Tuesday, January 11, 2005
This is another odd result: the Ger/BB/1907 Design Study A1
I have this Italian-looking German battleship design. I'm calling it the Ger/BB/1907 Design Study A1. The ship has 15-11in/45 guns (43 tons). That is the main feature of the ship. I had only allowed for 20 knots, but in Springsharp, I got 25 knots on a smaller displacement. Not only that, it is a good seaboat:
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