There are 12 of the Besed class mine warfare ships in service with each of the Northern
and Pacific Fleets. Oil firing allows a significant increase in range, speed, and mine capacity, compared to the Volkov
class.
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Besed class Mine Warfare Ship, laid down 1919
Length, 70.0 m x Beam, 8.0 m x Depth,
2.3 m 610 tonnes normal displacement (487 tonnes standard)
Main battery: 2 x 10.0-cm AA 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 AA, 2.5 cm shields
50 tons minesweeping equipment, 75 tons mines.
Maximum speed for 2029 shaft
kw = 19.00 knots Approximate cruising radius, 4000 nm / 15 knots
Typical complement: 61-80
Estimated
cost, $323,000 (£81,000)
Remarks:
Oil firing.
Good seaboat; rides out heavy weather easily.
Distribution
of weights: Percent normal displacement:
Armament ......................... 8 tonnes = 1 pct Armor,
total ..................... 3 tonnes = 1 pct
Armament 3 tonnes = 1 pct
Machinery ........................
97 tonnes = 16 pct Hull and fittings; equipment ..... 236 tonnes = 39 pct Fuel, ammunition, stores ......... 141 tonnes
= 23 pct Miscellaneous weights ............ 125 tonnes = 20 pct ----- 610 tonnes = 100 pct
Estimated metacentric
height, 0.3 m
Displacement summary:
Light ship: 469 tonnes Standard displacement: 487 tonnes Normal
service: 610 tonnes Full load: 706 tonnes
Loading submergence 340 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.13
Shellfire
needed to sink: 435 kg = 31.4 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, 65 percent (50 percent is 'average')
Relative
rocking effect from firing to beam, 0.12
Relative quality as a seaboat: 1.30
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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: 52 percent
Estimated
hull characteristics and strength:
Relative underwater volume absorbed by magazines and engineering spaces: 85
percent
Relative accommodation and working space: 100 percent
Displacement factor: 157 percent (Displacement
relative to loading factors)
Relative cross-sectional hull strength: 0.98 (Structure weight per square metre
of hull surface: 192 kg)
Relative longitudinal hull strength: 1.64 (for 2.70 m average freeboard; freeboard
adjustment +0.06 m)
Relative composite hull strength: 1.03
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[Machine-readable
parameters: Spring Style v. 1.2.1]
229.60 x 26.24 x 7.54; 8.86 -- Dimensions 0.47 -- Block coefficient 1919
-- Year laid down 19.00 / 4000 / 15.00; Oil-fired turbine or equivalent -- Speed / radius / cruise 125 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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