October 6th, 1986 - A Soviet Yankee class nuclear-powered submarine armed with 16 SS-N-6 missiles and an estimated two nuclear torpedoes sank some 1,000 km northeast of Bermuda.
April 7th, 1989 - A Soviet Mike class nuclear-powered attack submarine sank off northern Norway with the loss of 42 lives after a fire on board.
September 27th, 1991 - A missile misfired aboard a Soviet Typhoon class nuclear-powered submarine in the northern White Sea during a training exercise. The submarine, armed with nuclear missiles and torpedoes, returned to base safely.
March 20th, 1993 - A Russian Delta-3 class nuclear-powered submarine operating in the Barents Sea was struck by a US nuclear attack submarine. Both vessels returned to base.