Soviet submarine B-427

Soviet submarine B-427 B-427 was a Project 641 diesel-electric attack submarine of the Soviet Navy. The "B" (actually "Б") in her designation stands for большая in 1998.As of July 2016, the submarine is closed to the public.Service historyHer keel was laid down on 10 April 1971 at Sudomekh Shipyard of Leningrad.

It was launched on 22 June 1971 and commissioned on 4 December 1971.For twenty-two years B-427 patrolled the Pacific, protecting the ballistic missile submarine bastions of the Pacific Fleet while based out of Vladivostok, Russia with the exception of a few temporary postings as part of the Soviet Submarine Squadron that was for a time based at the former US Navy base at Cam Ranh Bay, Vietnam. Such postings were normally for a period of between 8 and 12 months before returning to Vladivostok.In 1989, B-427 was returning to Vladivostok from Vietnam when it ran into a typhoon. A mechanical breakdown that could not be fixed in time prevented the sub from diving. The storm battered the boat, destroying the light hull and damaging the ballast tanks and high pressure air bottles. B-427 was taken back to Vladivostok where it was repaired and refitted with a new light hull.

Operating as usual


Long Beach, CA

Opening Hours

Monday 10:00 - 18:00
Tuesday 10:00 - 18:00
Wednesday 10:00 - 18:00
Thursday 10:00 - 18:00
Friday 10:00 - 18:00
Saturday 10:00 - 18:00
Sunday 10:00 - 18:00


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