Ger/CB/1911, Germany Battlecruiser laid down 1911 (Engine 1927)
Displacement:
29,388 t light; 30,073 t standard; 34,250 t normal; 37,592 t full load
Dimensions: Length overall / water x beam x draught
751.00 ft / 750.00 ft x 100.00 ft x 30.10 ft (normal load)
228.90 m / 228.60 m x 30.48 m x 9.17 m
Armament:
6 - 12.00" / 305 mm guns (2x3 guns), 864.00lbs / 391.90kg shells, 1911 Model
Breech loading guns in turrets (on barbettes)
on centreline, all forward, 1 raised mount - superfiring
8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1911 Model
Quick firing guns in deck mounts with hoists
on side, all forward, 2 raised mounts - superfiring
Weight of broadside 6,048 lbs / 2,743 kg
Shells per gun, main battery: 0
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.00" / 152 mm 540.00 ft / 164.59 m 17.00 ft / 5.18 m
Ends: Unarmoured
Main Belt covers 111 % of normal length
- Torpedo Bulkhead:
2.00" / 51 mm 540.00 ft / 164.59 m 28.00 ft / 8.53 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8.00" / 203 mm 6.00" / 152 mm 8.00" / 203 mm
2nd: 2.00" / 51 mm - -
- Armour deck: 5.00" / 127 mm, Conning tower: 8.00" / 203 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 221,820 shp / 165,478 Kw = 34.00 kts
Range 10,000nm at 18.00 kts
Bunker at max displacement = 7,519 tons
Complement:
1,258 - 1,636
Cost:
£2.644 million / $10.575 million
Distribution of weights at normal displacement:
Armament: 756 tons, 2.2 %
Armour: 9,460 tons, 27.6 %
- Belts: 2,312 tons, 6.8 %
- Torpedo bulkhead: 1,119 tons, 3.3 %
- Armament: 1,090 tons, 3.2 %
- Armour Deck: 4,756 tons, 13.9 %
- Conning Tower: 182 tons, 0.5 %
Machinery: 7,002 tons, 20.4 %
Hull, fittings & equipment: 12,170 tons, 35.5 %
Fuel, ammunition & stores: 4,862 tons, 14.2 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
49,322 lbs / 22,372 Kg = 57.1 x 12.0 " / 305 mm shells or 6.8 torpedoes
Stability (Unstable if below 1.00): 1.31
Metacentric height 8.1 ft / 2.5 m
Roll period: 14.7 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0.26
Seaboat quality (Average = 1.00): 1.08
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.531
Length to Beam Ratio: 7.50 : 1
'Natural speed' for length: 27.39 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 50
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: 34.00 ft / 10.36 m
- Forecastle (20 %): 25.00 ft / 7.62 m
- Mid (50 %): 25.00 ft / 7.62 m
- Quarterdeck (15 %): 25.00 ft / 7.62 m
- Stern: 25.00 ft / 7.62 m
- Average freeboard: 25.72 ft / 7.84 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 103.0 %
- Above water (accommodation/working, high = better): 194.6 %
Waterplane Area: 51,421 Square feet or 4,777 Square metres
Displacement factor (Displacement / loading): 116 %
Structure weight / hull surface area: 162 lbs/sq ft or 791 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.52
- 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.
Saturday, July 02, 2005
The redesigned Ger/CB/1911 looks like a super-ship
The next design to reconsider was the Ger/CB/1911 battlecruiser. This is a flush-decked ship with two triple-12in/50 BLR turrets forward and 8-6in QF guns in shields, arrayed next to, and on, the forward superstructure. The belt is just 6 inches but the deck armour is 5 inches. The turrets and barbettes are 8 inches. In this case, I had underestimated what could be done on a given displacement (35,000 tons). I had decided that I could have 40 SHP/ton machinery, although my Springsharp design has lower power output machinery than that, although with a much greater power than originally planned. The new design can reach 34 knots on just a 34,500 ton displacement. This is the Springsharp report:
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