GB/CB/Super Fast X1, Enter country Enter ship type laid down 1917 (Engine 1937)
Displacement:
36,863 t light; 38,034 t standard; 38,950 t normal; 39,683 t full load
Dimensions: Length overall / water x beam x draught
800.00 ft / 800.00 ft x 106.00 ft x 39.00 ft (normal load)
243.84 m / 243.84 m x 32.31 m x 11.89 m
Armament:
4 - 17.00" / 432 mm guns (2x2 guns), 2,555.00lbs / 1,158.93kg shells, 1917 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
16 - 4.00" / 102 mm guns (8x2 guns), 32.00lbs / 14.51kg shells, 1917 Model
Quick firing guns in deck mounts with hoists
on side ends, evenly spread, 4 raised mounts - superfiring
Weight of broadside 10,732 lbs / 4,868 kg
Shells per gun, main battery: 65
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 9.00" / 229 mm 425.00 ft / 129.54 m 8.00 ft / 2.44 m
Ends: Unarmoured
Upper: 5.00" / 127 mm 425.00 ft / 129.54 m 8.00 ft / 2.44 m
Main Belt covers 82 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
1.50" / 38 mm 425.00 ft / 129.54 m 28.00 ft / 8.53 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.00" / 229 mm 6.00" / 152 mm 9.00" / 229 mm
2nd: 2.00" / 51 mm - 2.00" / 51 mm
- Armour deck: 2.50" / 64 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 8 shafts, 426,811 shp / 318,401 Kw = 40.00 kts
Range 4,500nm at 12.00 kts
Bunker at max displacement = 1,649 tons
Complement:
1,386 - 1,802
Cost:
£7.331 million / $29.322 million
Distribution of weights at normal displacement:
Armament: 1,292 tons, 3.3 %
Armour: 6,792 tons, 17.4 %
- Belts: 2,106 tons, 5.4 %
- Torpedo bulkhead: 660 tons, 1.7 %
- Armament: 1,593 tons, 4.1 %
- Armour Deck: 2,432 tons, 6.2 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 11,830 tons, 30.4 %
Hull, fittings & equipment: 16,949 tons, 43.5 %
Fuel, ammunition & stores: 2,087 tons, 5.4 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
29,824 lbs / 13,528 Kg = 12.1 x 17.0 " / 432 mm shells or 3.5 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 6.6 ft / 2.0 m
Roll period: 17.3 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.51
Seaboat quality (Average = 1.00): 1.01
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.412
Length to Beam Ratio: 7.55 : 1
'Natural speed' for length: 28.28 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 59
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 41.00 ft / 12.50 m
- Forecastle (20 %): 38.00 ft / 11.58 m
- Mid (40 %): 38.00 ft / 11.58 m (28.00 ft / 8.53 m aft of break)
- Quarterdeck (15 %): 28.00 ft / 8.53 m
- Stern: 28.00 ft / 8.53 m
- Average freeboard: 32.24 ft / 9.83 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 151.3 %
- Above water (accommodation/working, high = better): 224.6 %
Waterplane Area: 52,590 Square feet or 4,886 Square metres
Displacement factor (Displacement / loading): 95 %
Structure weight / hull surface area: 198 lbs/sq ft or 965 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.39
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
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, June 09, 2005
Extreme measures were needed, but I got a better "Super Fast Battlecruiser" design
I have spent the last 1/2 hour manipulating parameters in Springsharp to obtain a Super Fast Battlecruiser design that would have the desired speed, the desired armament, and close to the desired protectioin, along with adequate strength and seakeeping ability. I was forced to increase freeboard, draft, and beam to do so. This is the Springsharp report:
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