Liberte' Class Predreadnought Battleships, laid down 1902
Length, 133.8 m x Beam, 24.3 m x Depth, 8.3 m
15781 tonnes normal displacement (15032 tonnes standard)
Main battery: 4 x 30.5-cm (2 x 2)
Secondary battery: 10 x 19.0-cm (5 x 2)
QF battery:
18 x 16.0-cm
Light battery: 13 x 6.5-cm
Weight of broadside: 3597 kg
2 TT, 45.0 cm (submerged)
Main belt, 29.0 cm; bow and stern, 8.0 cm
Upper belt, 6.0 cm
Torpedo bulkhead, 2.0 cm
Armor deck, average 8.0 cm
Conning tower,
30.5 cm
Battery armor:
Main, 35.5 cm / secondary,
15.0 cm
QF, 8.0 cm / light guns, 5.0 cm shields
Maximum speed for 13093 indicated kw = 19.00 knots
Approximate cruising radius, 4200 nm / 10 knots
Typical complement: 704-915
Estimated cost, $6.781 million (£1.695 million)
Remarks:
Caution: Hull structure is subject to strain in open-sea
conditions.
Main belt does not fully protect magazines and
engineering spaces.
Magazines and engineering spaces are cramped, with poor
watertight
subdivision.
Cramped ship; poor crew accommodation, limited working space.
Distribution of weights:
Percent
normal
displacement:
Armament ......................... 989 tonnes
= 6 pct
Armor, total .....................
5667 tonnes = 36 pct
Belt
1974 tonnes = 13 pct
Torpedo
bulkhead 226 tonnes =
1 pct
Deck
1415 tonnes = 9 pct
C.T.
163 tonnes = 1 pct
Armament
1889 tonnes = 12 pct
Machinery ........................ 2658 tonnes =
17 pct
Hull and fittings; equipment ..... 4743 tonnes
= 30 pct
Fuel, ammunition, stores ......... 1723
tonnes = 11 pct
Miscellaneous weights ............
0 tonnes = 0 pct
-----
15781 tonnes = 100 pct
Estimated metacentric height, 1.3 m
Displacement summary:
Light ship:
14057 tonnes
Standard displacement: 15032 tonnes
Normal service: 15781 tonnes
Full load: 16316 tonnes
Loading submergence 2276 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.09
Shellfire needed to sink: 2686 kg = 6.8 x 30.5-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not
counting critical hits)
Torpedoes needed to sink: 1.3
(Approximates number of 'typical'
torpedo hits needed to sink ship)
Relative steadiness as gun platform, 54 percent
(50 percent is 'average')
Relative rocking effect from firing to beam, 0.49
Relative quality as a seaboat: 1.08
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Hull form characteristics:
Block coefficient: 0.58
Sharpness coefficient: 0.43
Hull speed coefficient 'M' = 5.35
'Natural speed' for length = 20.9 knots
Power going to wave formation
at top speed: 48 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by
magazines and engineering spaces: 140 percent
Relative accommodation and working space: 86 percent
Displacement factor: 83 percent
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.85
(Structure weight per square
metre
of hull surface: 681 kg)
Relative longitudinal hull strength: 1.40
(for 4.00 m average freeboard;
freeboard
adjustment -1.06 m)
Relative composite hull strength: 0.89
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[Machine-readable parameters: Spring Style v. 1.2.1]
438.86 x 79.70 x 27.22; 13.12 -- Dimensions
0.58 -- Block coefficient
1902 -- Year laid down
19.00 / 4200 /
10.00; Reciprocating -- Speed / radius / cruise
0 tons -- Miscellaneous weights
++++++++++
4 x 12.01; 2;
0 -- Main battery; turrets; superfiring
:
10 x 7.48; 5 -- Secondary battery; turrets
:
18 x 6.30 -- Tertiary (QF/AA) battery
:
13 x 2.56 -- Fourth (light) battery
2 / 2 / 17.72 --
TT / submerged / size
++++++++++
11.42 / 3.15 / 2.36 / 0.79; 100 -- Belt armor; relative extent
3.15 / 12.01 --
Deck / CT
13.98 / 5.91 / 3.15 / 1.97 -- Battery armor
(Note: For portability, values are stored in Anglo-American units)
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