Tyulpan Class Corvette, laid down 1916
Length, 65.0 m x Beam, 6.5 m x Depth, 2.6 m
421 tonnes normal displacement (385 tonnes standard)
Main battery: 2 x 10.0-cm (2 x 1; 1 superfiring)
Secondary battery: 4 x 0.7-cm
Light battery: 4 x
1.3-cm
Weight of broadside: 28 kg
4 TT, 53.0 cm
20 tons mines/depth charges
Hull unarmored
Maximum speed for 9012 shaft kw = 29.00 knots
Approximate cruising radius, 3600 nm / 10 knots
Typical complement: 46-60
Estimated cost, $323,000 (£81,000)
Remarks:
Caution: Hull structure is subject to strain in open-sea
conditions.
Caution: Very cramped ship with excessively poor habitability;
lacks suitable working space.
Main turrets are grouped together.
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 .........................
8 tonnes = 2 pct
Machinery ........................
214 tonnes = 51 pct
Hull and fittings; equipment .....
130 tonnes = 31 pct
Fuel, ammunition, stores .........
50 tonnes = 12 pct
Miscellaneous weights ............
20 tonnes = 5 pct
-----
421 tonnes = 100 pct
Estimated metacentric height, 0.2 m
Displacement summary:
Light ship:
371 tonnes
Standard displacement: 385 tonnes
Normal service:
421 tonnes
Full load:
448 tonnes
Loading submergence 223 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.04
Shellfire needed to sink: 45 kg = 3.3 x 10.0-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not
counting critical hits)
Torpedoes needed to sink: 0.1
(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, 0.73
Relative quality as a seaboat: 1.21
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Hull form characteristics:
Block coefficient: 0.38
Sharpness coefficient: 0.29
Hull speed coefficient 'M' = 8.69
'Natural speed' for length = 14.6 knots
Power going to wave formation
at top speed: 70 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by
magazines and engineering spaces: 183 percent
Relative accommodation and working space: 47 percent
Displacement factor: 43 percent
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.45
(Structure weight per square
metre
of hull surface: 116 kg)
Relative longitudinal hull strength: 2.29
(for 3.65 m average freeboard;
freeboard
adjustment +1.20 m)
Relative composite hull strength: 0.53
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[Machine-readable parameters: Spring Style v. 1.2.1]
213.20 x 21.32 x 8.53; 11.97 -- Dimensions
0.38 -- Block coefficient
1916 -- Year laid down
29.00 / 3600
/ 10.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
20 tons -- Miscellaneous weights
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2
x 3.94; 2; 1 -- Main battery; turrets; superfiring
Central positioning of guns
:
4 x 0.28;
0 -- Secondary battery; turrets
:
0 -- No tertiary (QF/AA) battery
4 x 0.51 -- Fourth (light) battery
4 / 0 / 20.87 -- TT / submerged / size
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0.00 -- No belt armor
0.00 / 0.00 -- Deck / CT
0.00
-- No battery armor
(Note: For portability, values are stored in Anglo-American units)
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