Russian submarine Kostroma (B-276)
On 11 February 1992, Kostroma - then still named K-276 Crab - while undergoing combat training in the Barents Sea, collided with USS Baton Rouge (some sources state it was K-239 Carp that collided with Baton Rouge).K-276 damaged the cabin fencing and the fairing of the hydroacoustic complex (GAK).Foreign sources believed that the Baton Rouge collided with the K-239, another submarine of the same design as the K-276.There is a version that the collision was initiated by the Kostroma crew deliberately in order to get rid of the pursuit of an American submarine.[2] On 14 May 2014, it became known about the conclusion of a contract between the Ministry of Defense of the Russian Federation and the enterprise TsS "Zvyozdochka" for the modernization of the Sierra I in Severodvinsk.