Ger/BB/1907, Germany Battleship laid down 1907
Displacement:
25,394 t light; 26,354 t standard; 29,548 t normal; 32,103 t full load
Dimensions: Length overall / water x beam x draught
620.00 ft / 620.00 ft x 105.00 ft x 26.00 ft (normal load)
188.98 m / 188.98 m x 32.00 m x 7.92 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, evenly spread, all raised mounts
Aft Main mounts separated by engine room
12 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1907 Model
Quick firing guns in deck mounts
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 335.00 ft / 102.11 m 8.00 ft / 2.44 m
Ends: Unarmoured
Upper: 7.00" / 178 mm 335.00 ft / 102.11 m 16.00 ft / 4.88 m
Main Belt covers 83 % of normal length
- Torpedo Bulkhead:
1.50" / 38 mm 335.00 ft / 102.11 m 26.00 ft / 7.92 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 13.0" / 330 mm 8.00" / 203 mm 10.0" / 254 mm
2nd: 2.00" / 51 mm - -
- Armour deck: 4.00" / 102 mm, Conning tower: 10.00" / 254 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 58,432 shp / 43,590 Kw = 24.00 kts
Range 6,500nm at 15.00 kts
Bunker at max displacement = 5,749 tons
Complement:
1,126 - 1,464
Cost:
£2.120 million / $8.479 million
Distribution of weights at normal displacement:
Armament: 912 tons, 3.1 %
Armour: 10,022 tons, 33.9 %
- Belts: 3,346 tons, 11.3 %
- Torpedo bulkhead: 483 tons, 1.6 %
- Armament: 2,428 tons, 8.2 %
- Armour Deck: 3,560 tons, 12.0 %
- Conning Tower: 206 tons, 0.7 %
Machinery: 3,320 tons, 11.2 %
Hull, fittings & equipment: 11,139 tons, 37.7 %
Fuel, ammunition & stores: 4,154 tons, 14.1 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
56,772 lbs / 25,752 Kg = 65.7 x 12.0 " / 305 mm shells or 9.4 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 6.8 ft / 2.1 m
Roll period: 16.9 seconds
Steadiness - As gun platform (Average = 50 %): 76 %
- Recoil effect (Restricted arc if above 1.00): 0.45
Seaboat quality (Average = 1.00): 1.53
Hull form characteristics:
Hull has rise forward of midbreak, raised quarterdeck
Block coefficient: 0.611
Length to Beam Ratio: 5.90 : 1
'Natural speed' for length: 24.90 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -2.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 30.00 ft / 9.14 m
- Forecastle (20 %): 28.00 ft / 8.53 m
- Mid (76 %): 28.00 ft / 8.53 m (18.00 ft / 5.49 m aft of break)
- Quarterdeck (15 %): 18.00 ft / 5.49 m (0.00 ft / 0.00 m before break)
- Stern: 18.00 ft / 5.49 m
- Average freeboard: 24.95 ft / 7.60 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 74.5 %
- Above water (accommodation/working, high = better): 206.4 %
Waterplane Area: 48,104 Square feet or 4,469 Square metres
Displacement factor (Displacement / loading): 123 %
Structure weight / hull surface area: 171 lbs/sq ft or 833 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.78
- 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
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 08, 2005
My Ger/BB/1907 design really worked well
Aside from having to inflate the displacement, I received a glowing report from Springsharp about my Ger/BB/1907 design. The concept was for a well-armored ship with 8-12in guns and 24 knots speed. I had hoped for a normal displacement of 25,847 tons, but that was too low for Springsharp. The ship has a tripod foremast and two funnels. What I was able to do was:
No comments:
Post a Comment