Cuniberti Ideal Battleship (Reciprocating), Test Fast Battleship laid down 1902
Displacement:
20,468 t light; 21,500 t standard; 23,363 t normal; 24,852 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(629.07 ft / 623.36 ft) x 86.61 ft x (27.89 / 29.28 ft)
(191.74 m / 190.00 m) x 26.40 m x (8.50 / 8.92 m)
Armament:
12 - 12.01" / 305 mm 40.0 cal guns - 849.99lbs / 385.55kg shells, 80 per gun
Breech loading guns in turret on barbette mounts, 1902 Model
2 x Twin mounts on centreline ends, evenly spread
4 x Twin mounts on sides, evenly spread
16 - 4.02" / 102 mm 40.0 cal guns - 25.00lbs / 11.34kg shells, 500 per gun
Quick firing guns in casemate mounts, 1902 Model
16 x Single mounts on sides, evenly spread
16 hull mounts in casemates- Limited use in all but light seas
Weight of broadside 10,600 lbs / 4,808 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.0" / 305 mm 456.04 ft / 139.00 m 16.40 ft / 5.00 m
Ends: Unarmoured
Main Belt covers 113 % of normal length
- Torpedo Bulkhead - Strengthened structural bulkheads:
1.97" / 50 mm 456.04 ft / 139.00 m 32.81 ft / 10.00 m
Beam between torpedo bulkheads 72.83 ft / 22.20 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 12.0" / 305 mm 2.95" / 75 mm 11.0" / 280 mm
2nd: 2.95" / 75 mm - -
- Armoured deck - multiple decks:
For and Aft decks: 2.95" / 75 mm
Forecastle: 0.00" / 0 mm Quarter deck: 2.95" / 75 mm
- Conning towers: Forward 12.01" / 305 mm, Aft 0.00" / 0 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 4 shafts, 29,000 ihp / 21,634 Kw = 21.03 kts
Range 8,000nm at 10.00 kts
Bunker at max displacement = 3,352 tons (100% coal)
Complement:
944 - 1,228
Cost:
£2.179 million / $8.716 million
Distribution of weights at normal displacement:
Armament: 1,652 tons, 7.1 %
- Guns: 1,652 tons, 7.1 %
Armour: 8,467 tons, 36.2 %
- Belts: 3,734 tons, 16.0 %
- Torpedo bulkhead: 1,090 tons, 4.7 %
- Armament: 1,554 tons, 6.7 %
- Armour Deck: 1,878 tons, 8.0 %
- Conning Tower: 211 tons, 0.9 %
Machinery: 4,394 tons, 18.8 %
Hull, fittings & equipment: 5,955 tons, 25.5 %
Fuel, ammunition & stores: 2,894 tons, 12.4 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
22,871 lbs / 10,374 Kg = 26.4 x 12.0 " / 305 mm shells or 3.6 torpedoes
Stability (Unstable if below 1.00): 1.28
Metacentric height 6.3 ft / 1.9 m
Roll period: 14.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.43
Seaboat quality (Average = 1.00): 1.21
Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.543 / 0.550
Length to Beam Ratio: 7.20 : 1
'Natural speed' for length: 24.97 kts
Power going to wave formation at top speed: 39 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 21.33 ft / 6.50 m, 15.58 ft / 4.75 m
- Forward deck: 30.00 %, 15.58 ft / 4.75 m, 13.12 ft / 4.00 m
- Aft deck: 35.00 %, 13.12 ft / 4.00 m, 13.12 ft / 4.00 m
- Quarter deck: 15.00 %, 13.12 ft / 4.00 m, 13.12 ft / 4.00 m
- Average freeboard: 14.44 ft / 4.40 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 111.9 %
- Above water (accommodation/working, high = better): 103.4 %
Waterplane Area: 37,437 Square feet or 3,478 Square metres
Displacement factor (Displacement / loading): 92 %
Structure weight / hull surface area: 151 lbs/sq ft or 735 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.00
- Longitudinal: 1.05
- Overall: 1.00
Cramped machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily