Russian Orphey class destroyers, laid down 1915
Length, 98.0 m x Beam, 9.3 m x Depth, 3.0 m
1378 tonnes normal displacement (1288 tonnes standard)
Main battery: 4 x 10.0-cm
Secondary
battery: 1 x 7.6-cm
AA battery: 4
x 1.3-cm
Weight of broadside: 62 kg
9 TT, 45.0 cm
20 tons depth charges
Hull unarmored
Battery armor:
Main, 2.5 cm shields
/ secondary, 2.5 cm shields
Maximum speed for 28168 shaft kw = 33.00 knots
Approximate cruising radius, 1700 nm / 15 knots
Typical complement: 113-147
Estimated cost, $997,000 (£249,000)
Remarks:
Caution: Hull structure is subject to strain in open-sea
conditions.
Caution: Magazines and engineering spaces are very cramped,
and
lack adequate watertight subdivision.
Oil firing.
Ship has slow, easy roll; a good, steady gun platform.
Good seaboat; rides out heavy weather easily.
Distribution of weights:
Percent
normal
displacement:
Armament ......................... 17
tonnes = 1 pct
Armor, total .....................
6 tonnes = 0 pct
Armament
6 tonnes = 0 pct
Machinery ........................ 810 tonnes
= 59 pct
Hull and fittings; equipment .....
396 tonnes = 29 pct
Fuel, ammunition, stores .........
130 tonnes = 9 pct
Miscellaneous weights ............
20 tonnes = 1 pct
-----
1378 tonnes = 100 pct
Estimated metacentric height, 0.4 m
Displacement summary:
Light ship:
1249 tonnes
Standard displacement: 1288 tonnes
Normal service: 1378 tonnes
Full load: 1445 tonnes
Loading submergence 578 tonnes/metre
+++++++++++++++++++++++++
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.28
Shellfire needed to sink: 155 kg = 11.2 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, 0.21
Relative quality as a seaboat: 1.21
+++++++++++++++++++++++++
Hull form characteristics:
Block coefficient: 0.50
Sharpness coefficient: 0.33
Hull speed coefficient 'M' = 8.83
'Natural speed' for length = 17.9 knots
Power going to wave formation
at top speed: 71 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by
magazines and engineering spaces: 200 percent
Relative accommodation and working space: 95 percent
Displacement factor: 46 percent
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.50
(Structure weight per square
metre
of hull surface: 160 kg)
Relative longitudinal hull strength: 1.58
(for 5.10 m average freeboard;
freeboard
adjustment +1.99 m)
Relative composite hull strength: 0.56
+++++++++++++++++++++++++
[Machine-readable parameters: Spring Style v. 1.2.1]
321.44 x 30.50 x 9.84; 16.73 -- Dimensions
0.50 -- Block coefficient
1915 -- Year laid down
33.00 / 1700
/ 15.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
20 tons -- Miscellaneous weights
++++++++++
4
x 3.94; 0 -- Main battery; turrets
Central positioning of guns
Gun-shields
:
1
x 2.99; 0 -- Secondary battery; turrets
Gun-shields
:
4 x 0.51 -- Tertiary (QF/AA) battery
:
0 -- No fourth (light) battery
9 / 0 / 17.72 -- TT / submerged / size
++++++++++
0.00 --
No belt armor
0.00 / 0.00 -- Deck / CT
0.98 / 0.98 / 0.00 / 0.00 -- Battery armor
(Note: For portability, values are stored in Anglo-American units)
+++++++++++++++++++++++++++++++++++++++++++++++++++++++