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45 YEARS AGO TODAY — U 137 | 27 OCTOBER 1981

On the night of 27 October 1981, Soviet submarine U 137 (S-363), a Whiskey-class diesel-electric attack submarine, ran aground in 🇸🇪 Sweden’s Gåsefjärden, deep inside Swedish territorial waters near the naval base at Karlskrona.

The incident became known internationally as “Whiskey on the Rocks.”

Discovered the following morning, the submarine’s presence in a sensitive military area triggered a major diplomatic crisis between Sweden and the Soviet Union at the height of the Cold War.

Sweden demanded answers. Soviet authorities claimed navigational error. Swedish forces maintained surveillance while the standoff unfolded, with the possibility of escalation hanging over the Baltic Sea.

The question of how the submarine ended up there and whether it was truly an accident, became one of the defining mysteries of Cold War naval history.

On 6 November 1981, after days of interrogation, diplomatic tension and military confrontation, U 137 was escorted out of Swedish waters.

45 years later, the incident remains a landmark case in maritime security, intelligence and Cold War history.

Was it a genuine navigational error, or something more deliberate?

#U137 #WhiskeyOnTheRocks #ColdWar #kallakriget
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