Soviet submarine S-363

Soviet submarine S-363

Soviet submarine "S-363" was a Whiskey class submarine of the Baltic Fleet, which became famous under the designation "U 137" when it ran aground 10 km from Karlskrona, one of the larger naval bases of the Swedish fleet, on the East coast of Sweden on October 27 1981. "U137" was the unofficial Swedish name for the vessel, as the Soviets considered names of most of its submarines to be classified at the time and didn't disclose them.

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When the Swedish Defence Research Agency secretly started measuring for radioactive materials through the hull, using a specially configured Coast Guard boat, they detected something that was almost certainly Uranium-238 inside the submarine. They speculated it originated from a nuclear weapon – a torpedo, in the upper port tube.Fact|date=December 2007 The yield of this weapon was estimated to approximately the same as the bomb dropped over Nagasaki in 1945. However, no nuclear weapon on board U 137 was ever officially confirmed by the Soviet authorities. [ [http://webex.maritima.se/process.asp?content=U137&selectedID=UID40a0b18bc5c7d8 No nuclear weapons on board?] ] Vasily Besedin later confirmed that there were nuclear warheads on some of the torpedoes, and that the crew was ordered to destroy the boat, including these warheads, if Swedish forces tried to take control over the vessel. [ [http://www.aftonbladet.se/vss/nyheter/story/0,2789,916366,00.html Cold War tactics] ] .

Sweden's Conservative government at the time was determined to safeguard Sweden's national integrity. As the Soviet recovery fleet appeared off the coast on the first day, a fixed coastal artillery battery locked onto the ships, showing the soviets that there were active coastal batteries on the islands. The fleet didn't turn immediately and as they came closer to the 12-mile territorial limit the battery was ordered to go into war mode on its targeting radar turning it from a single frequency radar to a jump frequency one. The Soviet fleet reacted almost immediately to this and everything except a heavy tugboat turned and stayed in international waters, the tugboat was quickly met by Swedish torpedo boats and it left as well.

Days later as the Soviet Captain was being interrogated the weather was very bad and the Soviet submarine sent a distress call. In Swedish radar control centers the storm was interfering with the radar image. Soviet jamming could also have been a factor. As the Soviet submarine sent its distress call two ships from the nearby Soviet armada passed the 12 mile limit headed for Karlskrona.This produced the most dangerous period of the crisis and is the time where the Swedish Prime Minister Thorbjörn Fälldin gave his famous order to "Hold the Border" to the Supreme Commander of the Swedish Armed Forces. The coastal battery now fully manned as well as the mobile coastal artillery guns and mine stations went to "action stations". The Swedish Air Force scrambled strike aircraft armed with modern anti-ship missiles and reconnaissance aircraft knowing full well that the weather didn't allow rescue helicopters to fly in the event of an engagement. After a tense 30 minutes Swedish FAC's had met the ships and identified them as West German grain carriers. The crisis was over.

Interpretations

At the time the incident was generally seen as a proof of widespread Soviet infiltration of the Swedish coastline, but this interpretation is still open to debate. The generally held belief in Sweden is that the submarine was there to spy on torpedo tests being performed by the Swedish Navy.Fact|date=December 2007

In an interview in 2006, Vasily Besedin, the political officer on board, gave a different picture. The vessel had dual navigation systems, a well-trained crew and the captain, Pyotr Gushchin, was among the best. On board was staff officer Joseph Avrukevich, who was trained in security techniques. Besedin claimed the incident was caused by an error in calculations by the navigation officer. [ [http://www.svd.se/dynamiskt/inrikes/did_13936377.asp Navigation errors?] ]

The area in which the Soviet submarine ran aground was at the time a restricted military zone, where no foreign nationals were allowed. The exact location served as one of only two routes that could be used to move bigger ships from the naval base in Karlskrona to open water. Although the submarine did not make it far into the archipelago, it had required at least two exact turns at specific points in order to get where it was.Fact|date=October 2007

This incident is popularly known in the West as "Whiskey on the rocks". In Soviet Navy the sub became to be known as "Swedish Komsomolets", a pun on both the incident, and the then widespread tendency to give the subs Komsomol-themed names.

Links

* [http://compunews.com/s139/sp2.htm Story of the incident with photos]

References


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