Imperator Nikolai, laid down 1913
Length, 181.0 m x Beam, 28.8 m x Depth, 9.0 m
25069 tonnes normal displacement (23472 tonnes standard)
Main battery: 12 x 30.5-cm (4 x 3)
Secondary battery: 10 x 13.0-cm
QF battery: 5
x 7.6-cm
Light battery: 4 x 4.7-cm
Weight of broadside: 5063 kg
4 TT, 47.0 cm
Main belt, 30.5 cm; bow and stern, 13.0 cm
Upper belt, 20.3 cm
Torpedo bulkhead, 5.0 cm
Armor deck, average 11.0 cm
Conning tower, 30.5 cm
Battery armor:
Main, 30.5 cm / secondary,
20.3 cm
QF, 2.5 cm shields
Maximum speed for 22810 shaft kw = 21.00 knots
Approximate cruising radius, 3000 nm / 16 knots
Typical complement: 996-1295
Estimated cost, $9.275 million (£2.319 million)
Remarks:
Relative extent of belt armor, 80 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 roomy, with superior
watertight
subdivision.
Ship is roomy, with superior accommodation and working space.
Main deck secondary guns subject to being washed down
in a seaway.
Distribution of weights:
Percent
normal
displacement:
Armament ......................... 1392 tonnes =
6 pct
Armor, total ..................... 9899 tonnes
= 39 pct
Belt
3096 tonnes = 12 pct
Torpedo
bulkhead 830 tonnes =
3 pct
Deck
2936 tonnes = 12 pct
C.T.
222 tonnes = 1 pct
Armament
2814 tonnes = 11 pct
Machinery ........................ 1317 tonnes =
5 pct
Hull and fittings; equipment ..... 9434 tonnes
= 38 pct
Fuel, ammunition, stores ......... 3027
tonnes = 12 pct
Miscellaneous weights ............
0 tonnes = 0 pct
-----
25069 tonnes = 100 pct
Estimated metacentric height, 1.7 m
Displacement summary:
Light ship:
22042 tonnes
Standard displacement: 23472 tonnes
Normal service: 25069 tonnes
Full load: 26247 tonnes
Loading submergence 3435 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.12
Shellfire needed to sink: 13944 kg = 35.4 x 30.5-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not
counting critical hits)
Torpedoes needed to sink: 5.3
(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, 0.55
Relative quality as a seaboat: 1.47
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Hull form characteristics:
Block coefficient: 0.53
Sharpness coefficient: 0.40
Hull speed coefficient 'M' = 6.21
'Natural speed' for length = 24.4 knots
Power going to wave formation
at top speed: 42 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by
magazines and engineering spaces: 77 percent
Relative accommodation and working space: 126 percent
Displacement factor: 107 percent
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.98
(Structure weight per square
metre
of hull surface: 875 kg)
Relative longitudinal hull strength: 1.64
(for 5.70 m average freeboard;
freeboard
adjustment +0.15 m)
Relative composite hull strength: 1.03
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[Machine-readable parameters: Spring Style v. 1.2.1]
593.68 x 94.46 x 29.52; 18.70 -- Dimensions
0.53 -- Block coefficient
1913 -- Year laid down
21.00 / 3000
/ 16.00; Turbine, coal fired -- Speed / radius / cruise
0 tons -- Miscellaneous weights
++++++++++
12 x
12.01; 4; 0 -- Main battery; turrets; superfiring
:
10 x 5.12; 0 -- Secondary battery; turrets
Main deck battery
:
5 x 2.99 -- Tertiary (QF/AA) battery
Gun-shields
:
4
x 1.85 -- Fourth (light) battery
4 / 0 / 18.50 -- TT / submerged / size
++++++++++
12.01 / 5.12 / 7.99 / 1.97;
80 -- Belt armor; relative extent
4.33 / 12.01 -- Deck / CT
12.01 / 7.99 / 0.98 / 0.00 -- Battery armor
(Note: For portability, values are stored in Anglo-American units)
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