Admiral Lazarev Class Light Cruiser, laid down 1914
Length, 163.2 m x Beam, 15.7 m x Depth, 6.2 m
8489 tonnes normal displacement (7761 tonnes standard)
Main battery: 9 x 15.0-cm (3 x 3; 1 superfiring)
Secondary battery: 8 x 10.0-cm
AA battery:
4 x 4.5-cm
Light battery: 6 x 1.3-cm
Weight of broadside: 537 kg
12 TT, 53.0 cm in 3 quadruple mounts
50 tons depth charges/mines
Main belt, 9.0 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, 10.0 cm / secondary,
2.5 cm shields
Maximum speed for 52686 shaft kw = 31.00 knots
Approximate cruising radius, 4500 nm / 15 knots
Typical complement: 442-575
Estimated cost, $3.905 million (£976,000)
Remarks:
Oil firing.
Relative extent of belt armor, 118 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.
Distribution of weights:
Percent
normal
displacement:
Armament ......................... 148 tonnes
= 2 pct
Armor, total .....................
1474 tonnes = 17 pct
Belt
862 tonnes = 10 pct
Deck
262 tonnes = 3 pct
C.T.
35 tonnes = 0 pct
Armament
315 tonnes = 4 pct
Machinery ........................ 2720 tonnes =
32 pct
Hull and fittings; equipment ..... 3101 tonnes
= 37 pct
Fuel, ammunition, stores .........
996 tonnes = 12 pct
Miscellaneous weights ............
50 tonnes = 1 pct
-----
8489 tonnes = 100 pct
Estimated metacentric height, 0.6 m
Displacement summary:
Light ship:
7492 tonnes
Standard displacement: 7761 tonnes
Normal service: 8489 tonnes
Full load: 9037 tonnes
Loading submergence 1688 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.06
Shellfire needed to sink: 3159 kg = 67.5 x 15.0-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not
counting critical hits)
Torpedoes needed to sink: 1.0
(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, 0.59
Relative quality as a seaboat: 1.22
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Hull form characteristics:
Block coefficient: 0.53
Sharpness coefficient: 0.34
Hull speed coefficient 'M' = 8.02
'Natural speed' for length = 23.1 knots
Power going to wave formation
at top speed: 58 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by
magazines and engineering spaces: 118 percent
Relative accommodation and working space: 109 percent
Displacement factor: 105 percent
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.96
(Structure weight per square
metre
of hull surface: 469 kg)
Relative longitudinal hull strength: 1.49
(for 6.10 m average freeboard;
freeboard
adjustment +1.63 m)
Relative composite hull strength: 1.01
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[Machine-readable parameters: Spring Style v. 1.2.1]
535.30 x 51.50 x 20.34; 20.01 -- Dimensions
0.53 -- Block coefficient
1914 -- Year laid down
31.00 / 4500
/ 15.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
50 tons -- Miscellaneous weights
++++++++++
9
x 5.91; 3; 1 -- Main battery; turrets; superfiring
:
8 x 3.94; 0 -- Secondary battery; turrets
Gun-shields
:
4 x 1.77 -- Tertiary (QF/AA) battery
:
6 x 0.51 -- Fourth (light)
battery
12 / 0 / 20.87 -- TT / submerged / size
++++++++++
3.54 / 1.18 / 1.97 / 0.00; 118 -- Belt armor; relative
extent
0.79 / 3.94 -- Deck / CT
3.94 / 0.98 / 0.00 / 0.00 -- Battery armor
(Note: For portability, values are stored in Anglo-American units)
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