Ger/BB/1907, Germany Battleship laid down 1907 (Engine 1914)
Displacement:
26,745 t light; 27,721 t standard; 30,292 t normal; 32,349 t full load
Dimensions: Length overall / water x beam x draught
620.00 ft / 620.00 ft x 105.00 ft x 34.00 ft (normal load)
188.98 m / 188.98 m x 32.00 m x 10.36 m
Armament:
8 - 12.00" / 305 mm guns (4x2 guns), 864.00lbs / 391.90kg shells, 1907 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, all raised mounts - superfiring
12 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1907 Model
Quick firing guns in deck mounts with hoists
on side, evenly spread, all raised mounts
Weight of broadside 7,296 lbs / 3,309 kg
Shells per gun, main battery: 90
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.0" / 330 mm 480.00 ft / 146.30 m 17.00 ft / 5.18 m
Ends: Unarmoured
Main Belt covers 119 % of normal length
- Torpedo Bulkhead:
2.00" / 51 mm 480.00 ft / 146.30 m 24.00 ft / 7.32 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 11.0" / 279 mm 7.00" / 178 mm 12.0" / 305 mm
2nd: 1.00" / 25 mm - -
- Armour deck: 3.50" / 89 mm, Conning tower: 10.00" / 254 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 117,442 shp / 87,612 Kw = 29.00 kts
Range 7,500nm at 15.00 kts
Bunker at max displacement = 4,628 tons
Complement:
1,147 - 1,492
Cost:
£2.336 million / $9.342 million
Distribution of weights at normal displacement:
Armament: 912 tons, 3.0 %
Armour: 10,654 tons, 35.2 %
- Belts: 4,432 tons, 14.6 %
- Torpedo bulkhead: 852 tons, 2.8 %
- Armament: 2,404 tons, 7.9 %
- Armour Deck: 2,756 tons, 9.1 %
- Conning Tower: 209 tons, 0.7 %
Machinery: 4,524 tons, 14.9 %
Hull, fittings & equipment: 10,655 tons, 35.2 %
Fuel, ammunition & stores: 3,547 tons, 11.7 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
37,415 lbs / 16,971 Kg = 43.3 x 12.0 " / 305 mm shells or 6.7 torpedoes
Stability (Unstable if below 1.00): 1.05
Metacentric height 6.0 ft / 1.8 m
Roll period: 18.1 seconds
Steadiness - As gun platform (Average = 50 %): 59 %
- Recoil effect (Restricted arc if above 1.00): 0.30
Seaboat quality (Average = 1.00): 1.14
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.479
Length to Beam Ratio: 5.90 : 1
'Natural speed' for length: 24.90 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 52
Bow angle (Positive = bow angles forward): -1.00 degrees
Stern overhang: -1.00 ft / -0.30 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.00 ft / 8.84 m
- Forecastle (67 %): 27.00 ft / 8.23 m
- Mid (67 %): 27.00 ft / 8.23 m (18.00 ft / 5.49 m aft of break)
- Quarterdeck (15 %): 18.00 ft / 5.49 m
- Stern: 18.00 ft / 5.49 m
- Average freeboard: 24.57 ft / 7.49 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 88.4 %
- Above water (accommodation/working, high = better): 127.2 %
Waterplane Area: 42,565 Square feet or 3,954 Square metres
Displacement factor (Displacement / loading): 112 %
Structure weight / hull surface area: 170 lbs/sq ft or 832 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.04
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
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, February 03, 2005
My Ger/BB/1907 with better SHP/ton
With a better SHP/ton for the machinery, I was almost able to match my hopes for the design from 1973. I had hoped for 30 knots, but I have settled for 29 knots (still faster than the original 1971 concept). The design carries 8-12in BLR and 12-4in QF guns. The belt is 13in with a 3.5in deck. The A/T bulkhead is 2 inches. This is the report:
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