Renan Class Armored Cruisers, laid down 1904
Length, 159.0 m x Beam, 21.4 m x Depth, 8.4 m
14408 tonnes normal displacement (11255 tonnes standard)
Main battery: 4 x 19.0-cm (2 x 2)
Secondary battery: 12 x 16.0-cm
QF battery: 16 x
4.7-cm
Light battery: 6 x 1.3-cm
Weight of broadside: 1085 kg
2 TT, 45.0 cm (submerged)
Main belt, 20.0 cm; bow and stern, 12.0 cm
Upper belt, 7.0 cm
Armor deck, average 5.0 cm
Conning tower, 20.0 cm
Battery armor:
Main, 20.0 cm / secondary,
16.0 cm
QF, 6.0 cm
Maximum speed for 23190 shaft kw = 23.00 knots
Approximate cruising radius, 6000 nm / 15 knots
Typical complement: 658-855
Estimated cost, $4.251 million (£1.063 million)
Remarks:
Ship has slow, easy roll; a good, steady gun platform.
Good seaboat; rides out heavy weather easily.
Main deck secondary guns subject to being washed down
in a seaway.
Distribution of weights:
Percent
normal
displacement:
Armament ......................... 298 tonnes
= 2 pct
Armor, total .....................
3349 tonnes = 23 pct
Belt
1774 tonnes = 12 pct
Deck
838 tonnes = 6 pct
C.T.
101 tonnes = 1 pct
Armament
636 tonnes = 4 pct
Machinery ........................ 3107 tonnes =
22 pct
Hull and fittings; equipment ..... 4013 tonnes
= 28 pct
Fuel, ammunition, stores ......... 3640
tonnes = 25 pct
Miscellaneous weights ............
0 tonnes = 0 pct
-----
14408 tonnes = 100 pct
Estimated metacentric height, 1.6 m
Displacement summary:
Light ship:
10768 tonnes
Standard displacement: 11255 tonnes
Normal service: 14408 tonnes
Full load: 16873 tonnes
Loading submergence 2156 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.37
Shellfire needed to sink: 7428 kg = 78.1 x 19.0-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not
counting critical hits)
Torpedoes needed to sink: 2.0
(Approximates number of 'typical'
torpedo hits needed to sink ship)
Relative steadiness as gun platform, 70 percent
(50 percent is 'average')
Relative rocking effect from firing to beam, 0.23
Relative quality as a seaboat: 1.39
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Hull form characteristics:
Block coefficient: 0.50
Sharpness coefficient: 0.37
Hull speed coefficient 'M' = 6.56
'Natural speed' for length = 22.8 knots
Power going to wave formation
at top speed: 47 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by
magazines and engineering spaces: 88 percent
Relative accommodation and working space: 103 percent
Displacement factor: 120 percent
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.97
(Structure weight per square
metre
of hull surface: 538 kg)
Relative longitudinal hull strength: 1.39
(for 4.70 m average freeboard;
freeboard
adjustment -0.27 m)
Relative composite hull strength: 1.01
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[Machine-readable parameters: Spring Style v. 1.2.1]
521.52 x 70.19 x 27.55; 15.42 -- Dimensions
0.50 -- Block coefficient
1904 -- Year laid down
23.00 / 6000
/ 15.00; Turbine, coal fired -- Speed / radius / cruise
0 tons -- Miscellaneous weights
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4 x 7.48;
2; 0 -- Main battery; turrets; superfiring
:
12 x 6.30; 0 -- Secondary battery; turrets
Main
deck battery
:
16 x 1.85 -- Tertiary (QF/AA) battery
:
6 x 0.51 -- Fourth (light)
battery
2 / 2 / 17.72 -- TT / submerged / size
++++++++++
7.87 / 4.72 / 2.76 / 0.00; 100 -- Belt armor; relative
extent
1.97 / 7.87 -- Deck / CT
7.87 / 6.30 / 2.36 / 0.00 -- Battery armor
(Note: For portability, values are stored in Anglo-American units)
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