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French Suffren class heavy cruisers, laid down 1921
Length, 190.0 m x Beam, 19.5 m x
Depth, 6.6 m
11094 tonnes normal displacement (10106 tonnes standard)
Main battery: 8 x 20.0-cm (3 turrets; 1
superfiring)
Secondary battery: 12 x 10.0-cm
AA battery: 16 x 4.0-cm
Light battery: 6 x 1.3-cm
Weight
of broadside: 1068 kg
8 TT, 53.0 cm in two quad mounts
Main belt, 10.0 cm; ends unarmored
Armor deck,
average 2.0 cm
Conning tower, 10.0 cm
Battery armor:
Main, 14.0 cm / secondary, 2.5 cm shields
AA, 2.5
cm shields
Aircraft - 2 Seaplanes, 1 Catapult
Maximum speed for 68656 shaft kw = 32.50 knots
Approximate
cruising radius, 10500 nm / 12 knots
Typical complement: 540-703
Estimated cost, $10.482 million (£2.620
million)
Remarks:
Relative extent of belt armor, 114 percent of 'typical' coverage.
Magazines and
engineering spaces are cramped, with poor
watertight subdivision.
Roomy upper decks; superior accommodation and
working space.
Distribution of weights:
Percent
normal
displacement:
Armament .........................
294 tonnes = 3 pct
Armor, total ..................... 1661 tonnes = 15 pct
Belt 717 tonnes = 6 pct
Deck 340
tonnes = 3 pct
C.T. 42 tonnes = 0 pct
Armament 562 tonnes = 5 pct
Machinery ........................ 3168
tonnes = 29 pct
Hull and fittings; equipment ..... 4516 tonnes = 41 pct
Fuel, ammunition, stores ......... 1406 tonnes
= 13 pct
Miscellaneous weights ............ 50 tonnes = 0 pct
-----
11094 tonnes = 100 pct
Estimated metacentric
height, 1.1 m
Displacement summary:
Light ship: 9689 tonnes
Standard displacement: 10106 tonnes
Normal
service: 11094 tonnes
Full load: 11840 tonnes
Loading submergence 2188 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.22
Shellfire
needed to sink: 4459 kg = 40.2 x 20.0-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)
Torpedoes needed to sink: 1.4
(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, 0.37
Relative quality as a seaboat: 1.00
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Hull
form characteristics:
Block coefficient: 0.45
Sharpness coefficient: 0.32
Hull speed coefficient 'M' = 8.55
'Natural speed' for length = 25.0 knots
Power going to wave formation
at top speed: 54 percent
Estimated
hull characteristics and strength:
Relative underwater volume absorbed by
magazines and engineering spaces: 114
percent
Relative accommodation and working space: 127 percent
Displacement factor: 107 percent
(Displacement
relative to loading factors)
Relative cross-sectional hull strength: 0.99
(Structure weight per square
metre
of hull surface: 574 kg)
Relative longitudinal hull strength: 1.15
(for 5.43 m average freeboard;
freeboard
adjustment +0.72 m)
Relative composite hull strength: 1.00
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[Machine-readable
parameters: Spring Style v. 1.2.1]
623.20 x 63.96 x 21.65; 17.81 -- Dimensions
0.45 -- Block coefficient
1921
-- Year laid down
32.50 / 10500 / 12.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
50 tons -- Miscellaneous
weights
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8 x 7.87; 3; 1 -- Main battery; turrets; superfiring
:
12 x 3.94; 0 -- Secondary battery;
turrets
Gun-shields
:
16 x 1.57 -- Tertiary (QF/AA) battery
Gun-shields
:
6 x 0.51 -- Fourth (light)
battery
8 / 0 / 20.87 -- TT / submerged / size
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3.94 / 0.00 / 0.00 / 0.00; 114 -- Belt armor; relative
extent
0.79 / 3.94 -- Deck / CT
5.51 / 0.98 / 0.98 / 0.00 -- Battery armor
(Note: For portability, values
are stored in Anglo-American units)
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