Ger/BB/1915-1916, Enter country Enter ship type laid down 1916 (Engine 1927)
Displacement:
72,261 t light; 75,702 t standard; 79,500 t normal; 82,539 t full load
Dimensions: Length overall / water x beam x draught
925.50 ft / 920.00 ft x 125.00 ft x 33.00 ft (normal load)
282.09 m / 280.42 m x 38.10 m x 10.06 m
Armament:
12 - 18.00" / 457 mm guns (4x3 guns), 2,916.00lbs / 1,322.68kg shells, 1916 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 6.00" / 152 mm guns (8x2 guns), 108.00lbs / 48.99kg shells, 1916 Model
Quick firing guns in turrets (on barbettes)
on side, all amidships, 4 raised mounts - superfiring
Weight of broadside 36,720 lbs / 16,656 kg
Shells per gun, main battery: 90
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 17.0" / 432 mm 500.00 ft / 152.40 m 17.00 ft / 5.18 m
Ends: Unarmoured
Main Belt covers 84 % of normal length
- Torpedo Bulkhead:
6.00" / 152 mm 500.00 ft / 152.40 m 33.00 ft / 10.06 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 17.0" / 432 mm 10.0" / 254 mm 17.0" / 432 mm
2nd: 6.00" / 152 mm 6.00" / 152 mm 6.00" / 152 mm
- Armour deck: 6.00" / 152 mm, Conning tower: 17.00" / 432 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 200,864 shp / 149,844 Kw = 29.00 kts
Range 7,500nm at 15.00 kts
Bunker at max displacement = 6,837 tons
Complement:
2,366 - 3,077
Cost:
£11.900 million / $47.601 million
Distribution of weights at normal displacement:
Armament: 4,590 tons, 5.8 %
Armour: 29,824 tons, 37.5 %
- Belts: 6,502 tons, 8.2 %
- Torpedo bulkhead: 3,663 tons, 4.6 %
- Armament: 8,446 tons, 10.6 %
- Armour Deck: 10,536 tons, 13.3 %
- Conning Tower: 677 tons, 0.9 %
Machinery: 6,340 tons, 8.0 %
Hull, fittings & equipment: 31,507 tons, 39.6 %
Fuel, ammunition & stores: 7,239 tons, 9.1 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
114,544 lbs / 51,956 Kg = 39.3 x 18.0 " / 457 mm shells or 20.5 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 8.1 ft / 2.5 m
Roll period: 18.4 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.84
Seaboat quality (Average = 1.00): 1.19
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.733
Length to Beam Ratio: 7.36 : 1
'Natural speed' for length: 30.33 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: 2.00 ft / 0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 40.00 ft / 12.19 m
- Forecastle (20 %): 27.00 ft / 8.23 m
- Mid (50 %): 27.00 ft / 8.23 m
- Quarterdeck (15 %): 27.00 ft / 8.23 m
- Stern: 27.00 ft / 8.23 m
- Average freeboard: 28.04 ft / 8.55 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 82.6 %
- Above water (accommodation/working, high = better): 206.3 %
Waterplane Area: 94,918 Square feet or 8,818 Square metres
Displacement factor (Displacement / loading): 100 %
Structure weight / hull surface area: 250 lbs/sq ft or 1,220 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.10
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
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.
Wednesday, July 12, 2006
The Ger/BB/1915-1916 design
All I have on the Red Book page for this is an inboard profile. I used a little creative license to supply the other specifications. I did that and what would make Springsharp happy. The pencil drawing shows a 920ft long, flush-decked hull. The armament is four main turrets, with two superfiring. The secondary armament is clearly meant to be 16-6in QF guns. This is the Springsharp report:
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