Russian Navy

K-456 Tver

K-456 Tver.

K-456 Tver is a Project 949A Antei nuclear-powered attack submarine (SSN).


Pacific Fleet, Krasheninnikov Bay


The submarine was laid down on February 9, 1988 at Sevmash shipyard (Severodvinsk) under the name of K-456; launched on June 28 (or August 18), 1991; obtained the name of Kasatka on February 15, 1992; commissioned into Northern Fleet on February 5, 1993; transferred to Pacific Fleet on September 28, 1993. The sub was renamed into Viliuchinsk on June 20, 1996 when she was taken under patronage by Viliuchinsk city administration. On January 28, 2011, the submarine was renamed into Tver; patronage relations with Tver Region were established.


In 1996 the sub won the Navy Commander's Prize for missile firing.

Since 1997 till 2001 the sub had been under interim overhaul at Zvezda shipyard in Bolshoi Kamen, Primorsky Krai.

In October 2003, the submarine was taken over by the crew of K-186 Omsk headed by V. Dmitriyev. Thanks to the crew's work, by February 2004 the submarine had successfully passed sea trials and was commissioned into constant-readiness force. The sub held missile firing drill during the exercise in September 2009.


NATO classification: Oscar-II
Surface speed: 15 knots
Submerged speed: 33 knots
Operating depth: 430 meters
Test depth: 600 meters
Crew: 107 men


Surface displacement: 14,700 tons
Submerged displacement: 23,860 tons
Extreme length (on design waterline): 154 meters
Extreme beam: 18.2 meters
Mean draft (on design waterline): 9.2 meters


2 x 190 MW nuclear reactors OK-650V


2 x 650-mm and 4 x 533-mm torpedo tubes, antiship cruise missile Granit launcher

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