Ger/BB/1909, Germany Battleship laid down 1909
Displacement:
26,686 t light; 27,692 t standard; 30,760 t normal; 33,214 t full load
Dimensions: Length overall / water x beam x draught
645.00 ft / 645.00 ft x 106.00 ft x 30.00 ft (normal load)
196.60 m / 196.60 m x 32.31 m x 9.14 m
Armament:
9 - 12.00" / 305 mm guns (3x3 guns), 864.00lbs / 391.90kg shells, 1909 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1909 Model
Quick firing guns in casemate mounts
on side, all amidships
Weight of broadside 8,640 lbs / 3,919 kg
Shells per gun, main battery: 80
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14.0" / 356 mm 350.00 ft / 106.68 m 17.00 ft / 5.18 m
Ends: Unarmoured
Main Belt covers 83 % of normal length
- Torpedo Bulkhead:
3.00" / 76 mm 350.00 ft / 106.68 m 29.00 ft / 8.84 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 14.0" / 356 mm 9.00" / 229 mm 14.0" / 356 mm
2nd: 6.00" / 152 mm 6.00" / 152 mm 6.00" / 152 mm
- Armour deck: 4.50" / 114 mm, Conning tower: 14.00" / 356 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 47,943 shp / 35,765 Kw = 23.00 kts
Range 7,000nm at 15.00 kts
Bunker at max displacement = 5,522 tons
Complement:
1,160 - 1,509
Cost:
£2.146 million / $8.585 million
Distribution of weights at normal displacement:
Armament: 1,080 tons, 3.5 %
Armour: 11,879 tons, 38.6 %
- Belts: 3,813 tons, 12.4 %
- Torpedo bulkhead: 1,127 tons, 3.7 %
- Armament: 2,764 tons, 9.0 %
- Armour Deck: 3,880 tons, 12.6 %
- Conning Tower: 296 tons, 1.0 %
Machinery: 2,179 tons, 7.1 %
Hull, fittings & equipment: 11,548 tons, 37.5 %
Fuel, ammunition & stores: 4,074 tons, 13.2 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
69,229 lbs / 31,402 Kg = 80.1 x 12.0 " / 305 mm shells or 14.4 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 7.1 ft / 2.2 m
Roll period: 16.7 seconds
Steadiness - As gun platform (Average = 50 %): 98 %
- Recoil effect (Restricted arc if above 1.00): 0.50
Seaboat quality (Average = 1.00): 1.96
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.525
Length to Beam Ratio: 6.08 : 1
'Natural speed' for length: 25.40 kts
Power going to wave formation at top speed: 44 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -2.00 degrees
Stern overhang: -1.00 ft / -0.30 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 31.00 ft / 9.45 m
- Forecastle (20 %): 28.00 ft / 8.53 m
- Mid (63 %): 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: 25.28 ft / 7.71 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 61.6 %
- Above water (accommodation/working, high = better): 193.6 %
Waterplane Area: 46,609 Square feet or 4,330 Square metres
Displacement factor (Displacement / loading): 124 %
Structure weight / hull surface area: 175 lbs/sq ft or 853 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 2.00
- 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
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
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Thursday, September 15, 2005
The September 8, 2001 version of the Ger/BB/1909 design
The Ger/BB/1909 drawing from September 8, 2001 is not very inspired, but it does look distinctly like a WWI-era German battleship. Partly, the problem is that three triple 12in gun turrets dow't seem very appropriate for such a ship. This drawing has some specifications, so I needed to invent less for Springsharp. The design, as originally entered allowed for room for growth, so I increased the range and deck armor. This is the Springsharp report:
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