Russian submarine Losharik

History
Russia
BuilderSevmash, Severodvinsk
Laid down1988
Launched13 August 2003
Nickname(s)"Losharik"
StatusLaid up
General characteristics
Class & typeProject 210 submarine
Displacement
  • 1600 tonnes (surfaced)
  • 2100 tonnes (submerged)
Length60 m or 70 m (unconfirmed)
Propulsion1 nuclear reactor E-17 (15 MW)
Test depth2,000–2,500 metres (6,600–8,200 ft) depth in the Arctic Ocean in 2012
Complement25 (estimated), all officers

Project 210, Project 10831 or AS-31 (Russian: АС-31), nicknamed Losharik (Russian: Лошарик, IPA: [lɐˈʂarʲɪk]), is a Russian deep-diving nuclear powered submarine. On 1 July 2019, a fire broke out on the vessel while it was taking underwater measurements of the sea floor in Russian territorial waters.

АС stands for Атомная Станция (Atomnaya Stanziya), from the Russian naval term атомная глубоководная станция, 'nuclear deepwater station'. The submarine is also known as AS-12, but this number is assigned to another vessel.