Losos-class submarine

{{More citations needed|date=March 2024}}

{{Infobox ship begin|sclass=2}}

{{Infobox ship image

|Ship image=T792.jpg

|Ship caption=Losos-class submarine

}}

{{Infobox ship class overview

|Name=

|Builders=Shipyard "Leningradskoe Admiralteyskoe Obedinenie" (Admiralteyskie Verfi), Saint Petersburg (Leningrad)

|Operators=*{{navy|Soviet Union}}

  • {{navy|Russia}}

|Class before=

|Class after=

|Subclasses=

|Cost=

|Built range=

|In service range=1988-1997

|In commission range=

|Total ships building=

|Total ships planned=6

|Total ships completed=2

|Total ships cancelled=4

|Total ships active=

|Total ships laid up=2

|Total ships lost=

|Total ships retired=

|Total ships preserved=

}}

{{Infobox ship characteristics

|Hide header=

|Ship displacement=218 tons surfaced, 390 tons submerged

|Ship length={{convert|28.2|m|ftin|abbr=on}}

|Ship beam={{convert|4.8|m|ftin|abbr=on}}

|Ship height=

|Ship draught={{convert|5.1|m|ftin|abbr=on}}

|Ship depth=*Operational: {{convert|240|m|ftin|abbr=on}}

  • Maximum: {{convert|300|m|ftin|abbr=on}}

|Ship power= Diesel-electric

|Ship propulsion=diesel electric, 2 diesel – {{convert|160|kW|abbr=on}}; propulsion motor – {{convert|60|kW|abbr=on}}

|Ship speed=*{{convert|6.65|kn}} (submerged)

  • {{convert|6.43|kn}} (surfaced)

|Ship range=

|Ship endurance=10 days

|Ship test depth={{convert|200|m|ft|abbr=on}}

|Ship complement=9

|Ship time to activate=

|Ship sensors=

|Ship EW=Active/passive radar and sonar

|Ship armament=2 mine-laying devices or 2 torpedoes

|Ship armour=

|Ship armor=

|Ship aircraft=

|Ship aircraft facilities=

|Ship notes=

}}

Project 865 Piranha ({{langx|ru|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.

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|date=February 2011}}

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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