Ideal Battleship-Modified, Great Britain Battleship laid down 1905 (Engine 1909)
Displacement:
24,583 t light; 25,679 t standard; 28,203 t normal; 30,223 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(603.00 ft / 589.00 ft) x 87.00 ft x (29.50 / 31.30 ft)
(183.79 m / 179.53 m) x 26.52 m x (8.99 / 9.54 m)
Armament:
8 - 12.00" / 305 mm 45.0 cal guns - 871.37lbs / 395.24kg shells, 90 per gun
Breech loading guns in turret on barbette mounts , 1905 Model
2 x Twin mounts on centreline ends, evenly spread
2 x Twin mounts on sides, forward deck aft
2 double raised mounts
4 - 12.00" / 305 mm 45.0 cal guns - 871.37lbs / 395.24kg shells, 90 per gun
Breech loading guns in turret on barbette mounts , 1905 Model
4 x Single mounts on sides, evenly spread
12 - 3.00" / 76.2 mm 45.0 cal guns - 13.62lbs / 6.18kg shells, 90 per gun
Quick firing guns in casemate mounts , 1905 Model
12 x Single mounts on sides, evenly spread
12 hull mounts in casemates- Limited use in heavy seas
Weight of broadside 10,620 lbs / 10,620 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.0" / 305 mm 350.00 ft / 106.68 m 8.00 ft / 2.44 m
Ends: 12.0" / 305 mm 239.00 ft / 72.85 m 8.00 ft / 2.44 m
Upper: 12.0" / 305 mm 230.00 ft / 70.10 m 8.00 ft / 2.44 m
Main Belt covers 91 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
1.50" / 38 mm 350.00 ft / 106.68 m 29.50 ft / 8.99 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 12.0" / 305 mm 7.00" / 178 mm 12.0" / 305 mm
2nd: 12.0" / 305 mm 7.00" / 178 mm 12.0" / 305 mm
3rd: 6.00" / 152 mm 4.00" / 102 mm 4.00" / 102 mm
- Armour deck: 2.00" / 51 mm, Conning tower: 12.00" / 305 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
ERROR: Revise drives, 4 shafts, 56,834 ihp / 42,398 Kw = 24.00 kts
Range 5,200nm at 14.00 kts
Bunker at max displacement = 4,545 tons (100% coal)
Complement:
1,087 - 1,414
Cost:
£2.457 million / $9.827 million
Distribution of weights at normal displacement:
Armament: 2,031 tons, 7.2 %
Armour: 9,041 tons, 32.1 %
- Belts: 3,438 tons, 12.2 %
- Torpedo bulkhead: 573 tons, 2.0 %
- Armament: 3,334 tons, 11.8 %
- Armour Deck: 1,456 tons, 5.2 %
- Conning Tower: 240 tons, 0.8 %
Machinery: 4,372 tons, 15.5 %
Hull, fittings & equipment: 9,999 tons, 35.5 %
Fuel, ammunition & stores: 3,620 tons, 12.8 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
31,520 lbs / 14,297 Kg = 36.5 x 12.0 " / 305 mm shells or 4.5 torpedoes
Stability (Unstable if below 1.00): 1.04
Metacentric height 4.4 ft / 1.3 m
Roll period: 17.5 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0.80
Seaboat quality (Average = 1.00): 1.08
Hull form characteristics:
Hull has raised forecastle,
a ram bow and a round stern
Block coefficient (normal/deep): 0.653 / 0.660
Length to Beam Ratio: 6.77 : 1
'Natural speed' for length: 24.27 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 6.00 ft / 1.83 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 8.00 %, 28.00 ft / 8.53 m, 28.00 ft / 8.53 m
- Forward deck: 30.00 %, 20.00 ft / 6.10 m, 20.00 ft / 6.10 m
- Aft deck: 47.00 %, 20.00 ft / 6.10 m, 20.00 ft / 6.10 m
- Quarter deck: 15.00 %, 20.00 ft / 6.10 m, 20.00 ft / 6.10 m
- Average freeboard: 20.64 ft / 6.29 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 106.3 %
- Above water (accommodation/working, high = better): 138.0 %
Waterplane Area: 39,363 Square feet or 3,657 Square metres
Displacement factor (Displacement / loading): 104 %
Structure weight / hull surface area: 177 lbs/sq ft or 863 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.39
- 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, February 24, 2007
A big ship is necessary to implement Colonel Cuniberti's ideas in Springsharp 3.0b Beta
I was able to get Colonel Cuniberti's ideas to work in Springsharp 3.0b Beta, but the ship had to have a great displacement and large dimensions. Lightweight machinery was also required, but I was able to use his armament layout and a 24 knot speed, with a complete 12in belt. This ship is really a battleship-cruiser of the sort advocated by William Hovgaard. This is the Springsharp report:
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