Dreadnought, Great Britain Battleship laid down 1907 (Engine 1909)
Displacement:
16,570 t light; 17,695 t standard; 19,627 t normal; 21,173 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(525.00 ft / 525.00 ft) x 82.00 ft x (27.00 / 28.73 ft)
(160.02 m / 160.02 m) x 24.99 m x (8.23 / 8.76 m)
Armament:
10 - 12.00" / 305 mm 45.0 cal guns - 850.00lbs / 385.55kg shells, 150 per gun
Breech loading guns in turret on barbette mounts , 1907 Model
2 x Triple mounts on centreline ends, evenly spread
2 x Twin mounts on centreline ends, evenly spread
2 raised mounts
24 - 3.00" / 76.2 mm 50.0 cal guns - 12.00lbs / 5.44kg shells, 150 per gun
Breech loading guns in deck and hoist mounts , 1907 Model
8 x Twin mounts on sides, forward deck aft
8 raised mounts
4 x Twin mounts on sides, aft deck forward
4 raised mounts
Weight of broadside 8,788 lbs / 8,788 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 11.0" / 279 mm 355.00 ft / 108.20 m 8.00 ft / 2.44 m
Ends: 8.00" / 203 mm 355.00 ft / 108.20 m 8.00 ft / 2.44 m
Main Belt covers 104 % of normal length
- Torpedo Bulkhead:
2.00" / 51 mm 355.00 ft / 108.20 m 27.00 ft / 8.23 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 11.0" / 279 mm 7.00" / 178 mm 11.0" / 279 mm
2nd: 2.00" / 51 mm 1.00" / 25 mm 2.00" / 51 mm
- Armour deck: 3.00" / 76 mm, Conning tower: 11.00" / 279 mm
Machinery:
Coal fired boilers, steam turbines,
Direct drive, 4 shafts, 27,672 shp / 20,644 Kw = 21.00 kts
Range 4,800nm at 14.00 kts
Bunker at max displacement = 3,477 tons (100% coal)
Complement:
828 - 1,077
Cost:
£1.625 million / $6.501 million
Distribution of weights at normal displacement:
Armament: 1,637 tons, 8.3 %
Armour: 6,757 tons, 34.4 %
- Belts: 2,195 tons, 11.2 %
- Torpedo bulkhead: 709 tons, 3.6 %
- Armament: 1,947 tons, 9.9 %
- Armour Deck: 1,733 tons, 8.8 %
- Conning Tower: 172 tons, 0.9 %
Machinery: 1,384 tons, 7.0 %
Hull, fittings & equipment: 7,416 tons, 37.8 %
Fuel, ammunition & stores: 3,057 tons, 15.6 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
29,537 lbs / 13,398 Kg = 34.2 x 12.0 " / 305 mm shells or 5.5 torpedoes
Stability (Unstable if below 1.00): 1.09
Metacentric height 4.4 ft / 1.3 m
Roll period: 16.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.85
Seaboat quality (Average = 1.00): 1.40
Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.591 / 0.599
Length to Beam Ratio: 6.40 : 1
'Natural speed' for length: 22.91 kts
Power going to wave formation at top speed: 46 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 24.00 ft / 7.32 m, 20.00 ft / 6.10 m
- Forward deck: 30.00 %, 20.00 ft / 6.10 m, 18.00 ft / 5.49 m
- Aft deck: 35.00 %, 18.00 ft / 5.49 m, 18.00 ft / 5.49 m
- Quarter deck: 15.00 %, 18.00 ft / 5.49 m, 19.00 ft / 5.79 m
- Average freeboard: 19.10 ft / 5.82 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 84.3 %
- Above water (accommodation/working, high = better): 132.6 %
Waterplane Area: 31,222 Square feet or 2,901 Square metres
Displacement factor (Displacement / loading): 111 %
Structure weight / hull surface area: 165 lbs/sq ft or 805 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.68
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
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