Combat Capability [42%], Role and Missions, Structure of the Navy, in-service ships, surface ships, submarines, chronology.
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B-138 Obninsk is a Project 671RTMK Schuka nuclear-powered attack submarine (SSN).
REGISTRATIONNorthern Fleet, Zaozersk
CONSTRUCTION, NAMEThe submarine was laid down on December 17, 1988 at Admiralteysky Zavod shipyard (Leningrad); launched on August 5, 1989; commissioned into Northern Fleet on February 28, 1991 under the name of K-138; renamed into B-138 on June 3, 1992; obtained the name of Obninsk on May 5, 2000 being taken under patronage of Obninsk town administration.
MILESTONESIn 1991 the sub won the Navy Commander's Prize for attack of a task force and was titled "excellent submarine" at the year end.
In 1992 the sub was second in the Navy Commander's Prize contest and was titled "excellent submarine" at the year end.
In 1997, 1998 the sub took part in Northern Fleet's integrated exercise.
As of 2008, the sub was in service.
PERFORMANCENATO classification: Victor-III
Surface speed: 11.6 knots
Submerged speed: 31 knots
Operating depth: 400 meters
Test depth: 600 meters
Endurance: 80 days
Crew: 96 men
DIMENSIONSSurface displacement: 6,990 tons
Submerged displacement: 7,250 tons
Extreme length (on design waterline): 107.1 meters
Extreme beam: 10.8 meters
Mean draft (on design waterline): 7.8 meters