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
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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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