Soviet submarine S-363
USSR SUBMARINE WHICH RAN AGROUND IN KARLSKRONA, SWEDEN IN OCTOBER 1981
Soviet submarine U-137; Whiskey on the rocks; U137; S-363; Karlskrona incident
Soviet submarine S-363 was a Soviet Navy of the Baltic Fleet, which became notable under the designation U137 when it ran aground on 27 October 1981 on the south coast of Sweden, approximately from Karlskrona, one of the largest Swedish naval bases. U137 was the unofficial Swedish name for the vessel, as the Soviets considered names of most of their submarines to be classified at the time and did not disclose them.