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Volkov Class Mine Warfare Ship
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There are 12 of the Volkov class mine warfare ships in service with each of the the Black Sea, Baltic, Northern, and Pacific Fleets, and 4 in service with the Caspian Sea Flotilla. 

Volkov Class Mine Warfare Ship, laid down 1912

Length, 70.0 m x Beam, 8.0 m x Depth, 2.3 m
610 tonnes normal displacement (456 tonnes standard)

Main battery: 2 x 10.0-cm
QF battery: 4 x 3.7-cm
Light battery: 4 x 1.3-cm

Weight of broadside: 31 kg

Hull unarmored

Battery armor:
Main, 2.5 cm shields
QF, 2.5 cm shields

50 tons minesweeping equipment, 60 tons mines.

Maximum speed for 1641 shaft kw = 18.00 knots
Approximate cruising radius, 5000 nm / 12 knots

Typical complement: 61-80


Estimated cost, $144,000 (£36,000)

Remarks:

Good seaboat; rides out heavy weather easily.

Magazines and engineering spaces are roomy, with superior
watertight subdivision.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 8 tonnes = 1 pct
Armor, total ..................... 3 tonnes = 1 pct

Armament 3 tonnes = 1 pct

Machinery ........................ 96 tonnes = 16 pct
Hull and fittings; equipment ..... 221 tonnes = 36 pct
Fuel, ammunition, stores ......... 172 tonnes = 28 pct
Miscellaneous weights ............ 110 tonnes = 18 pct
-----
610 tonnes = 100 pct

Estimated metacentric height, 0.3 m

Displacement summary:

Light ship: 439 tonnes
Standard displacement: 456 tonnes
Normal service: 610 tonnes
Full load: 731 tonnes

Loading submergence 340 tonnes/metre

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Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.21

Shellfire needed to sink: 439 kg = 31.7 x 10.0-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 0.6
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 67 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.11

Relative quality as a seaboat: 1.34

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Hull form characteristics:

Block coefficient: 0.47
Sharpness coefficient: 0.34
Hull speed coefficient 'M' = 8.27
'Natural speed' for length = 15.2 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: 82 percent

Relative accommodation and working space: 91 percent


Displacement factor: 163 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.97
(Structure weight per square
metre of hull surface: 185 kg)

Relative longitudinal hull strength: 1.38
(for 2.45 m average freeboard;
freeboard adjustment -0.19 m)

Relative composite hull strength: 1.01

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[Machine-readable parameters: Spring Style v. 1.2.1]

229.60 x 26.24 x 7.54; 8.04 -- Dimensions
0.47 -- Block coefficient
1912 -- Year laid down
18.00 / 5000 / 12.00; Turbine, coal fired -- Speed / radius / cruise
110 tons -- Miscellaneous weights
++++++++++
2 x 3.94; 0 -- Main battery; turrets
Central positioning of guns
Gun-shields
:
0 -- No secondary battery
4 x 1.46 -- Tertiary (QF/AA) battery
Gun-shields
:
4 x 0.51 -- Fourth (light) battery
0 -- No torpedo armament
++++++++++
0.00 -- No belt armor
0.00 / 0.00 -- Deck / CT
0.98 / 0.00 / 0.98 / 0.00 -- Battery armor


(Note: For portability, values are stored in Anglo-American units)


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