Kasatka-class submarine

Class overview
Russian submarine Kasatka
Name:	Kasatka class
Builders:	Baltic works
Operators:	Imperial Russian Navy
Preceded by:	Som class
In commission:	1904–1922
Completed:	6
Lost:	2
Retired:	4
General characteristics
Type:	Submarine
Displacement:	140 tons surfaced 177 tons submerged
Length:	33.5 m (109 ft 11 in)
Beam:	3.5 m (11 ft 6 in)
Draught:	3.4 m (11 ft 2 in)
Propulsion:	1 shaft petrol / electric (later diesel electric) 150 kW (200 hp) / 75 kW (100 hp)
Speed:	8.5 knots (15.7 km/h; 9.8 mph) surfaced 5.5 knots (10.2 km/h; 6.3 mph) submerged
Complement:	24
Armament:	4 external torpedoes in drop collars 1 machine gun (later 1 × 47mm gun)

The Kasatka class was a class of submarines built for the Imperial Russian Navy. The six boats were built between 1904 and 1905. They were designed by I. G. Bubnov and were based on the Russian submarine Delfin. The first boat, Kasatka, experienced significant problems with stability on trials and had to have extra flotation added. The boats were re-built around 1910 with diesel engines added (89 kW (120 hp)) and new conning towers replacing the older structure.

Ships

All six boats were built by Baltic works St. Petersburg and launched in 1904

Ship	namesake	Service
Keta (ex Feldmarshal Graf Sheremetev)	A type of Salmon, (Boris Sheremetev)	The boat was paid for by public subscription with the Sheremetev family as major donors. Arrived Vladivostok in 1905, transferred to the Baltic in 1915, Broken up 1922
Kasatka (Касатка)	Orca	Transferred to Vladivostok 1905, To Baltic 1915, to Caspian Sea 1918, Broken up 1922
Makrel (Макрель)	Mackrel	Transferred to Vladivostok 1905, To Baltic 1915, to Caspian Sea 1918, Broken up 1922
Nalim (Налим)	Burbot	Transferred to Vladivostok 1905, To Black Sea Fleet 1915, captured by Germans 1918, Taken by white Russians 1919, Scuttled at Sevastopol April 1919
Okun (Окунь)	Perch	Transferred to Vladivostok 1905, To Baltic 1915, to Caspian Sea 1918, Broken up 1922
Skat (Скат)	Skate	Transferred to Vladivostok 1905, To Black Sea Fleet 1915, captured by Germans 1918, Taken by white Russians 1919, Scuttled at Sevastopol April 1919

References

Conway's All the World's Fighting Ships 1906-1922

Russian naval ship classes of the Russo-Japanese War

Pre-dreadnought battleships	Imperator Aleksandr II Navarin ^S Sissoi Veliky ^S Petropavlovsk Peresvet Tsesarevich ^S Borodino Retvizan ^S

Coastal defense ships	Admiral Ushakov

Armored cruisers	Vladimir Monomakh ^S Dmitrii Donskoi ^S Admiral Nakhimov ^S Rurik ^S Rossia ^S Gromoboi ^S Bayan

Protected cruisers	Svetlana ^S Pallada Varyag ^S Askold ^S Bogatyr Novik ^S Boyarin ^S Izumrud

Unprotected cruisers	Almaz ^S

Armed merchant cruisers	Ural ^S

Submarines	Delfin ^S Som Kasatka

S Single ship of class C Completed after the war

Russian naval ship classes of World War I

Dreadnought battleships	Gangut Imperatritsa Mariya Imperator Nikolai I^S

Pre-dreadnought battleships	Ekaterina II Imperator Aleksandr II Petropavlovsk Tri Sviatitelia^S Rostislav^S Tsesarevich^S Borodino Peresvet Potemkin^S Evstafi Andrei Pervozvanny

Battlecruisers	Borodino^X

Armored cruisers	Rossia^S Gromoboi^S Bayan Rurik^S

Light cruisers	Svetlana^C Admiral Nakhimov^C

Protected cruisers	Pallada Askold^S Bogatyr Izumrud

Destroyers	Novik^S Derzky Orfey Izyaslav Fidonisy

Submarines	Delfin^S Som Kasatka Minoga^S Akula^S Karp Kaiman Krab^S Morzh Bars Narval A (AG)

S Single ship of class C Completed after the war X Cancelled

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