Predreadnought Battleship Andrei Pervozvanni, laid down 1904
Length, 140.0 m x Beam, 24.5 m x Depth, 8.2 m
17014 tonnes normal displacement (15382 tonnes standard)
Main battery: 4 x 30.5-cm (2 x 2)
Secondary battery: 8 x 20.3-cm (4 x 2)
QF battery:
6 x 20.3-cm
Light battery: 12 x 4.7-cm
Weight of broadside: 3216 kg
2 TT, 46.0 cm (submerged)
Main belt, 21.5 cm; bow and stern, 10.0 cm
Upper belt, 13.0 cm
Torpedo bulkhead, 5.0 cm
Armor deck, average 10.0 cm
Conning tower, 20.0 cm
Battery armor:
Main, 20.0 cm / secondary,
15.0 cm
QF, 15.0 cm / light guns, 5.0 cm shields
Maximum speed for 11055 indicated kw = 18.00 knots
Approximate cruising radius, 6000 nm / 12 knots
Typical complement: 745-968
Estimated cost, $6.214 million (£1.554 million)
Remarks:
Oil firing.
Relative extent of belt armor, 90 percent of 'typical' coverage.
Main belt does not fully protect magazines and
engineering spaces.
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.
Main deck QF guns subject to being washed down in a seaway.
Distribution of weights:
Percent
normal
displacement:
Armament ......................... 884 tonnes
= 5 pct
Armor, total .....................
5758 tonnes = 34 pct
Belt
1786 tonnes = 10 pct
Torpedo
bulkhead 585 tonnes =
3 pct
Deck
1909 tonnes = 11 pct
C.T.
112 tonnes = 1 pct
Armament
1367 tonnes = 8 pct
Machinery ........................ 2178 tonnes =
13 pct
Hull and fittings; equipment ..... 5631 tonnes
= 33 pct
Fuel, ammunition, stores ......... 2562
tonnes = 15 pct
Miscellaneous weights ............
0 tonnes = 0 pct
-----
17014 tonnes = 100 pct
Estimated metacentric height, 1.5 m
Displacement summary:
Light ship:
14452 tonnes
Standard displacement: 15382 tonnes
Normal service: 17014 tonnes
Full load: 18252 tonnes
Loading submergence 2456 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.20
Shellfire needed to sink: 5638 kg = 14.3 x 30.5-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not
counting critical hits)
Torpedoes needed to sink: 2.1
(Approximates number of 'typical'
torpedo hits needed to sink ship)
Relative steadiness as gun platform, 71 percent
(50 percent is 'average')
Relative rocking effect from firing to beam, 0.48
Relative quality as a seaboat: 1.42
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Hull form characteristics:
Block coefficient: 0.60
Sharpness coefficient: 0.44
Hull speed coefficient 'M' = 5.46
'Natural speed' for length = 21.4 knots
Power going to wave formation
at top speed: 44 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by
magazines and engineering spaces: 111 percent
Relative accommodation and working space: 99 percent
Displacement factor: 99 percent
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 1.00
(Structure weight per square
metre
of hull surface: 746 kg)
Relative longitudinal hull strength: 1.76
(for 4.50 m average freeboard;
freeboard
adjustment -0.63 m)
Relative composite hull strength: 1.06
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[Machine-readable parameters: Spring Style v. 1.2.1]
459.20 x 80.36 x 26.90; 14.76 -- Dimensions
0.60 -- Block coefficient
1904 -- Year laid down
18.00 / 6000
/ 12.00; Reciprocating -- Speed / radius / cruise
0 tons -- Miscellaneous weights
++++++++++
4 x 12.01;
2; 0 -- Main battery; turrets; superfiring
:
8 x 7.99; 4 -- Secondary battery; turrets
:
6 x 7.99 -- Tertiary (QF/AA) battery
Main deck battery
:
12 x 1.85 -- Fourth (light)
battery
2 / 2 / 18.11 -- TT / submerged / size
++++++++++
8.46 / 3.94 / 5.12 / 1.97; 90 -- Belt armor; relative
extent
3.94 / 7.87 -- Deck / CT
7.87 / 5.91 / 5.91 / 1.97 -- Battery armor
(Note: For portability, values are stored in Anglo-American units)
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