Losos-class submarine

(Redirected from Project 865 Piranha)

Project 865 Piranha (Russian: Проект 865 «Пиранья») is a type of Russian (formerly Soviet) midget submarine. The NATO reporting name for the class is Losos, which means "salmon" in the Russian language.

Losos-class submarine
Class overview
BuildersShipyard "Leningradskoe Admiralteyskoe Obedinenie" (Admiralteyskie Verfi), Saint Petersburg (Leningrad)
Operators
In service1988-1997
Planned6
Completed2
Cancelled4
Laid up2
General characteristics
Displacement218 tons surfaced, 390 tons submerged
Length28.2 m (92 ft 6 in)
Beam4.8 m (15 ft 9 in)
Draught5.1 m (16 ft 9 in)
Depth
  • Operational: 240 m (787 ft 5 in)
  • Maximum: 300 m (984 ft 3 in)
Installed powerDiesel-electric
Propulsiondiesel electric, 2 diesel – 160 kW (210 hp); propulsion motor – 60 kW (80 hp)
Speed
  • 6.65 knots (12.32 km/h; 7.65 mph) (submerged)
  • 6.43 knots (11.91 km/h; 7.40 mph) (surfaced)
Endurance10 days
Test depth200 m (660 ft)
Complement9
Electronic warfare
& decoys
Active/passive radar and sonar
Armament2 mine-laying devices or 2 torpedoes

The Losos class was designed for special operations and engaging surface ships located offshore, and is thus very durable and almost completely silent.[citation needed]

The hull is made of a titanium alloy, which helps with signature management because it is not magnetic. The non-magnetic alloy would greatly reduce the effectiveness of enemy magnetic anomaly detectors or magnetic limpet mines against this type of vessel.

Only two Losos-class submarines were built: MS-520 and MS-521. Original planning called for a total of 12 Project 865 Piranha submarines to be constructed; this was eventually reduced to six, then just the two. Launched in 1986 and 1990, respectively, they are in reserve but are expected to soon be discarded.

References

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