Courbet Class Battleship, laid down 1910
Length, 165.0 m x Beam, 28.3 m x Depth, 8.7 m
23756 tonnes normal displacement (22221 tonnes standard)
Main battery: 12 x 30.5-cm (6 x 2; 2 superfiring)
Secondary battery: 22 x 14.0-cm
QF battery: 6
x 4.5-cm
Light battery: 6 x 1.3-cm
Weight of broadside: 5567 kg
4 TT, 45.0 cm (submerged)
Main belt, 26.2 cm; bow and stern, 18.0 cm
Torpedo bulkhead, 6.0
cm
Armor deck, average 5.8 cm
Conning tower, 30.0 cm
Battery armor:
Main, 32.0 cm / secondary,
10.0 cm
QF, 2.5 cm shields
Maximum speed for 30280 shaft kw = 22.50 knots
Approximate cruising radius, 7500 nm / 10 knots
Typical complement: 957-1244
Estimated cost, $9.078 million (£2.270 million)
Remarks:
Relative extent of belt armor, 96 percent of 'typical' coverage.
Main belt does not fully protect magazines and
engineering spaces.
Main deck secondary guns subject to being washed down
in a seaway.
Distribution of weights:
Percent
normal
displacement:
Armament ......................... 1531 tonnes =
6 pct
Armor, total ..................... 8447 tonnes
= 36 pct
Belt
2317 tonnes = 10 pct
Torpedo
bulkhead 877 tonnes =
4 pct
Deck
1473 tonnes = 6 pct
C.T.
211 tonnes = 1 pct
Armament
3569 tonnes = 15 pct
Machinery ........................ 1844 tonnes =
8 pct
Hull and fittings; equipment ..... 8902 tonnes
= 37 pct
Fuel, ammunition, stores ......... 3031
tonnes = 13 pct
Miscellaneous weights ............
0 tonnes = 0 pct
-----
23756 tonnes = 100 pct
Estimated metacentric height, 1.5 m
Displacement summary:
Light ship:
20725 tonnes
Standard displacement: 22221 tonnes
Normal service: 23756 tonnes
Full load: 24889 tonnes
Loading submergence 3268 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.04
Shellfire needed to sink: 9424 kg = 23.9 x 30.5-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not
counting critical hits)
Torpedoes needed to sink: 3.4
(Approximates number of 'typical'
torpedo hits needed to sink ship)
Relative steadiness as gun platform, 50 percent
(50 percent is 'average')
Relative rocking effect from firing to beam, 0.53
Relative quality as a seaboat: 1.00
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Hull form characteristics:
Block coefficient: 0.58
Sharpness coefficient: 0.43
Hull speed coefficient 'M' = 5.76
'Natural speed' for length = 23.3 knots
Power going to wave formation
at top speed: 50 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by
magazines and engineering spaces: 99 percent
Relative accommodation and working space: 114 percent
Displacement factor: 98 percent
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.99
(Structure weight per square
metre
of hull surface: 905 kg)
Relative longitudinal hull strength: 1.41
(for 5.00 m average freeboard;
freeboard
adjustment -0.49 m)
Relative composite hull strength: 1.03
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[Machine-readable parameters: Spring Style v. 1.2.1]
541.20 x 92.82 x 28.54; 16.40 -- Dimensions
0.58 -- Block coefficient
1910 -- Year laid down
22.50 / 7500
/ 10.00; Turbine, coal fired -- Speed / radius / cruise
0 tons -- Miscellaneous weights
++++++++++
12 x
12.01; 6; 2 -- Main battery; turrets; superfiring
:
22 x 5.51; 0 -- Secondary battery; turrets
Main deck battery
:
6 x 1.77 -- Tertiary (QF/AA) battery
Gun-shields
:
6
x 0.51 -- Fourth (light) battery
4 / 4 / 17.72 -- TT / submerged / size
++++++++++
10.31 / 7.09 / 0.00 / 2.36;
96 -- Belt armor; relative extent
2.28 / 11.81 -- Deck / CT
12.60 / 3.94 / 0.98 / 0.00 -- Battery armor
(Note: For portability, values are stored in Anglo-American units)
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