Russian Izyslav class destroyers, laid down 1914
Length, 107.0 m x Beam, 9.4 m x Depth, 3.0 m
1947 tonnes normal displacement (1736 tonnes standard)
Main battery: 5 x 10.0-cm
Secondary
battery: 1 x 7.6-cm
AA battery: 2
x 4.5-cm
Light battery: 6 x 1.3-cm
Weight of broadside: 78 kg
9 TT, 45.0 cm
100 tons depth charges
Hull unarmored
Battery armor:
Main, 2.5 cm shields
/ secondary, 2.5 cm shields
AA, 1.0 cm shields
Maximum speed for 30090 shaft kw = 31.75 knots
Approximate cruising radius, 3000 nm / 15 knots
Typical complement: 147-191
Estimated cost, $1.181 million (£295,000)
Remarks:
Caution: Hull structure is subject to strain in open-sea
conditions.
Oil firing.
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 ......................... 21
tonnes = 1 pct
Armor, total .....................
8 tonnes = 0 pct
Armament
8 tonnes = 0 pct
Machinery ........................ 1108 tonnes =
57 pct
Hull and fittings; equipment ..... 446
tonnes = 23 pct
Fuel, ammunition, stores .........
264 tonnes = 14 pct
Miscellaneous weights ............
100 tonnes = 5 pct
-----
1947 tonnes = 100 pct
Estimated metacentric height, 0.4 m
Displacement summary:
Light ship:
1683 tonnes
Standard displacement: 1736 tonnes
Normal service: 1947 tonnes
Full load: 2108 tonnes
Loading submergence 752 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.33
Shellfire needed to sink: 207 kg = 14.9 x 10.0-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not
counting critical hits)
Torpedoes needed to sink: 0.2
(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, 0.22
Relative quality as a seaboat: 1.20
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Hull form characteristics:
Block coefficient: 0.64
Sharpness coefficient: 0.36
Hull speed coefficient 'M' = 8.59
'Natural speed' for length = 18.7 knots
Power going to wave formation
at top speed: 69 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by
magazines and engineering spaces: 197 percent
Relative accommodation and working space: 102 percent
Displacement factor: 58 percent
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.50
(Structure weight per square
metre
of hull surface: 151 kg)
Relative longitudinal hull strength: 1.05
(for 5.06 m average freeboard;
freeboard
adjustment +1.73 m)
Relative composite hull strength: 0.54
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[Machine-readable parameters: Spring Style v. 1.2.1]
350.96 x 30.83 x 9.84; 16.60 -- Dimensions
0.64 -- Block coefficient
1914 -- Year laid down
31.75 / 3000
/ 15.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
100 tons -- Miscellaneous weights
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5
x 3.94; 0 -- Main battery; turrets
Central positioning of guns
Gun-shields
:
1
x 2.99; 0 -- Secondary battery; turrets
Gun-shields
:
2 x 1.77 -- Tertiary (QF/AA) battery
Gun-shields
:
6 x 0.51 -- Fourth (light) battery
9 / 0 / 17.72 -- TT / submerged / size
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0.00 -- No belt armor
0.00 / 0.00 -- Deck / CT
0.98 / 0.98 / 0.39 / 0.00 -- Battery armor
(Note: For portability, values are stored in Anglo-American units)
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