Palladia Class Protected Cruiser, laid down 1897
Length, 123.7 m x Beam, 16.8 m x Depth, 6.4 m
6973 tonnes normal displacement (6208 tonnes standard)
Main battery: 14 x 15.0-cm
Light
battery: 4 x 1.3-cm
Weight of broadside: 655 kg
3 TT, 45.0 cm in one triple mount
150 tons mines
Main belt, 8.0 cm; bow and stern, 3.0 cm
Upper belt, 5.0 cm
Armor deck, average 2.0 cm
Conning tower, 10.0 cm
Battery armor:
Main, 5.0 cm shields
Maximum speed for 11406 indicated kw = 21.00 knots
Approximate cruising radius, 2500 nm / 15 knots
Typical complement: 382-496
Estimated cost, $2.841 million (£710,000)
Remarks:
Relative extent of belt armor, 140 percent of 'typical' coverage.
Ship has slow, easy roll; a good, steady gun platform.
Good seaboat; rides out heavy weather easily.
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 ......................... 180 tonnes
= 3 pct
Armor, total .....................
1057 tonnes = 15 pct
Belt
763 tonnes = 11 pct
Deck
210 tonnes = 3 pct
C.T.
31 tonnes = 0 pct
Armament
53 tonnes = 1 pct
Machinery ........................ 2506 tonnes =
36 pct
Hull and fittings; equipment ..... 2055 tonnes
= 29 pct
Fuel, ammunition, stores ......... 1025
tonnes = 15 pct
Miscellaneous weights ............
150 tonnes = 2 pct
-----
6973 tonnes = 100 pct
Estimated metacentric height, 1.1 m
Displacement summary:
Light ship:
5948 tonnes
Standard displacement: 6208 tonnes
Normal service: 6973 tonnes
Full load: 7557 tonnes
Loading submergence 1352 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.38
Shellfire needed to sink: 1725 kg = 36.8 x 15.0-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not
counting critical hits)
Torpedoes needed to sink: 0.8
(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, 0.16
Relative quality as a seaboat: 1.38
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Hull form characteristics:
Block coefficient: 0.52
Sharpness coefficient: 0.37
Hull speed coefficient 'M' = 6.49
'Natural speed' for length = 20.1 knots
Power going to wave formation
at top speed: 49 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by
magazines and engineering spaces: 139 percent
Relative accommodation and working space: 88 percent
Displacement factor: 91 percent
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.97
(Structure weight per square
metre
of hull surface: 441 kg)
Relative longitudinal hull strength: 1.55
(for 4.00 m average freeboard;
freeboard
adjustment -0.30 m)
Relative composite hull strength: 1.02
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[Machine-readable parameters: Spring Style v. 1.2.1]
405.74 x 55.10 x 20.99; 13.12 -- Dimensions
0.52 -- Block coefficient
1897 -- Year laid down
21.00 / 2500
/ 15.00; Reciprocating -- Speed / radius / cruise
150 tons -- Miscellaneous weights
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14 x 5.91; 0 --
Main battery; turrets
Central positioning of guns
Gun-shields
:
0 -- No secondary
battery
0 -- No tertiary (QF/AA) battery
4 x 0.51 -- Fourth (light) battery
3 / 0 / 17.72 -- TT / submerged /
size
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3.15 / 1.18 / 1.97 / 0.00; 140 -- Belt armor; relative extent
0.79 / 3.94 -- Deck / CT
1.97
/ 0.00 / 0.00 / 0.00 -- Battery armor
(Note: For portability, values are stored in Anglo-American units)
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