Ger/CB/1943, Germany Battlecruiser laid down 1943
Displacement:
109,838 t light; 114,654 t standard; 124,354 t normal; 132,115 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(1,265.65 ft / 1,250.00 ft) x 156.00 ft x (40.00 / 41.98 ft)
(385.77 m / 381.00 m) x 47.55 m x (12.19 / 12.80 m)
Armament:
9 - 21.00" / 533 mm 45.0 cal guns - 4,670.00lbs / 2,118.28kg shells, 90 per gun
Breech loading guns in turret on barbette mounts , 1943 Model
3 x Triple mounts on centreline ends, majority forward
1 raised mount - superfiring
18 - 6.00" / 152 mm 55.0 cal guns - 115.00lbs / 52.16kg shells, 150 per gun
Quick firing guns in turret on barbette mounts , 1943 Model
6 x Triple mounts on sides, forward deck aft
18 - 4.00" / 102 mm 45.0 cal guns - 32.27lbs / 14.64kg shells, 150 per gun
Anti-air guns in deck and hoist mounts , 1943 Model
4 x Triple mounts on sides, forward deck aft
4 raised mounts
2 x Triple mounts on sides, aft deck forward
2 raised mounts
40 - 1.46" / 37.0 mm 70.0 cal guns - 1.73lbs / 0.79kg shells, 150 per gun
Anti-air guns in deck mounts , 1943 Model
6 x 2 row quad mounts on sides, evenly spread
2 raised mounts
4 x 4 row quad mounts on centreline ends, evenly spread
2 raised mounts - superfiring
Weight of broadside 44,750 lbs / 44,750 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14.0" / 356 mm 690.00 ft / 210.31 m 16.00 ft / 4.88 m
Ends: Unarmoured
Main Belt covers 85 % of normal length
- Torpedo Bulkhead:
7.00" / 178 mm 690.00 ft / 210.31 m 40.00 ft / 12.19 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 14.0" / 356 mm 10.0" / 254 mm 14.0" / 356 mm
2nd: 6.00" / 152 mm 4.00" / 102 mm 6.00" / 152 mm
3rd: 1.00" / 25 mm 1.00" / 25 mm 1.00" / 25 mm
- Armour deck: 7.00" / 178 mm, Conning tower: 14.00" / 356 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 8 shafts, 460,408 shp / 343,464 Kw = 35.00 kts
Range 12,000nm at 18.00 kts
Bunker at max displacement = 17,461 tons
Complement:
3,310 - 4,304
Cost:
£63.682 million / $254.727 million
Distribution of weights at normal displacement:
Armament: 6,779 tons, 5.5 %
Armour: 40,135 tons, 32.3 %
- Belts: 6,799 tons, 5.5 %
- Torpedo bulkhead: 7,148 tons, 5.7 %
- Armament: 7,679 tons, 6.2 %
- Armour Deck: 17,756 tons, 14.3 %
- Conning Tower: 751 tons, 0.6 %
Machinery: 11,891 tons, 9.6 %
Hull, fittings & equipment: 52,789 tons, 42.5 %
Fuel, ammunition & stores: 14,516 tons, 11.7 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
231,002 lbs / 104,781 Kg = 49.9 x 21.0 " / 533 mm shells or 52.6 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 14.6 ft / 4.5 m
Roll period: 17.1 seconds
Steadiness - As gun platform (Average = 50 %): 73 %
- Recoil effect (Restricted arc if above 1.00): 0.52
Seaboat quality (Average = 1.00): 1.46
Hull form characteristics:
Hull has a flush deck,
an extended bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0.558 / 0.565
Length to Beam Ratio: 8.01 : 1
'Natural speed' for length: 35.36 kts
Power going to wave formation at top speed: 46 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 28.00 %, 43.00 ft / 13.11 m, 35.00 ft / 10.67 m
- Forward deck: 30.00 %, 35.00 ft / 10.67 m, 33.00 ft / 10.06 m
- Aft deck: 27.00 %, 33.00 ft / 10.06 m, 34.00 ft / 10.36 m
- Quarter deck: 15.00 %, 34.00 ft / 10.36 m, 35.00 ft / 10.67 m
- Average freeboard: 35.12 ft / 10.70 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 71.3 %
- Above water (accommodation/working, high = better): 266.4 %
Waterplane Area: 137,114 Square feet or 12,738 Square metres
Displacement factor (Displacement / loading): 119 %
Structure weight / hull surface area: 282 lbs/sq ft or 1,379 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.11
- 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
Good seaboat, rides out heavy weather easily
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.
Sunday, June 10, 2007
My Ger/CB/1943 design from March 1999
I have this sketch design for a large, fast battlecruiser that I am calling the Ger/CB/1943 that dates from March 1999. I have a ballpoint ink drawing, not to scale, and a few specifications. The main thing that I do not like about it is that the draft is too deep, at 40ft. I approve of it otherwise and it works extremely well in Springsharp 3.0b1 Beta. This is a 1,250ft ship with 9-21in guns that has a speed of 35 knots. This is the Springsharp report:
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