Length, 60.0 m x Beam, 9.0 m x Depth, 2.0 m
653 tonnes normal displacement (596 tonnes standard)
Main battery: 1 x 25.4-cm
AA
battery: 2 x 3.7-cm
Light battery:
4 x 1.3-cm
Weight of broadside: 229 kg
Main belt, 2.5 cm; bow and stern, 2.0 cm
Upper belt, 2.5 cm
Armor deck, average 1.0 cm
Conning tower, 3.0 cm
Battery armor:
Main, 3.0 cm shields
AA, 2.5 cm shields / light guns, 2.5 cm shields
Maximum speed for 421 shaft kw = 12.00 knots
Approximate cruising radius, 4500 nm / 10 knots
Typical complement: 65-84
Estimated cost, $705,000 (£176,000)
Remarks:
Relative extent of belt armor, 86 percent of 'typical' coverage.
Ship has slow, easy roll; a good, steady gun platform.
Cramped ship; poor crew accommodation, limited working space.
Distribution of weights:
Percent
normal
displacement:
Armament ......................... 63
tonnes = 10 pct
Armor, total .....................
116 tonnes = 18 pct
Belt
79 tonnes = 12 pct
Deck
30 tonnes = 5 pct
C.T.
2 tonnes = 0 pct
Armament
5 tonnes = 1 pct
Machinery ........................ 20
tonnes = 3 pct
Hull and fittings; equipment .....
343 tonnes = 53 pct
Fuel, ammunition, stores .........
112 tonnes = 17 pct
Miscellaneous weights ............
0 tonnes = 0 pct
-----
653 tonnes = 100 pct
Estimated metacentric height, 0.3 m
Displacement summary:
Light ship:
541 tonnes
Standard displacement: 596 tonnes
Normal service:
653 tonnes
Full load:
696 tonnes
Loading submergence 387 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.12
Shellfire needed to sink: 386 kg = 1.7 x 25.4-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not
counting critical hits)
Torpedoes needed to sink: 0.6
(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, 0.45
Relative quality as a seaboat: 1.01
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Hull form characteristics:
Block coefficient: 0.60
Sharpness coefficient: 0.41
Hull speed coefficient 'M' = 6.93
'Natural speed' for length = 14.0 knots
Power going to wave formation
at top speed: 38 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by
magazines and engineering spaces: 84 percent
Relative accommodation and working space: 72 percent
Displacement factor: 99 percent
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 1.10
(Structure weight per square
metre
of hull surface: 310 kg)
Relative longitudinal hull strength: 1.50
(for 1.80 m average freeboard;
freeboard
adjustment -0.88 m)
Relative composite hull strength: 1.14
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[Machine-readable parameters: Spring Style v. 1.2.1]
196.80 x 29.52 x 6.56; 5.90 -- Dimensions
0.60 -- Block coefficient
1920 -- Year laid down
12.00 / 4500 /
10.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
0 tons -- Miscellaneous weights
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1 x 10.00; 0 -- Main battery; turrets
Central positioning of guns
Gun-shields
:
0 -- No secondary battery
2 x 1.46 -- Tertiary (QF/AA) battery
Gun-shields
:
4 x 0.51
-- Fourth (light) battery
0 -- No torpedo armament
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0.98 / 0.79 / 0.98 / 0.00; 86 -- Belt armor; relative
extent
0.39 / 1.18 -- Deck / CT
1.18 / 0.00 / 0.98 / 0.98 -- Battery armor
(Note: For portability, values are stored in Anglo-American units)
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