USN:
Spruance-class destroyer USS Caron (DD-970) being rammed by a Soviet SKR-6 Frigate, during a dispute over territorial waters, 1986.
On 13 March 1986, in an unprecedented move, Caron and Yorktown entered Soviet territorial waters to the south of the Crimean Peninsula, which prompted a Soviet diplomatic protest. Administration officials claimed it was "simply an exercise of the right of innocent passage", although Pentagon officials readily confirmed that one purpose of the exercise was to collect intelligence.
In February 1988, Caron, again operating with Yorktown, entered Soviet 12 miles (19 km) territorial waters limit in the Black Sea off the Crimean Peninsula. Under international law, this act could be permissible if the ship was progressing from one point in international waters to another point in international waters via the shortest course possible, but according to the Soviet Union, it was the right of the USSR to authorize or prohibit travel in selected areas within the 12-mile limit. The United States, however, did not recognize the Soviet claim in this case. To prevent the claim from becoming accepted precedent, the US Navy asserted that it had sailed warships through such areas at regular intervals in the past in accordance with established international law.
In response, the Soviets deployed a frigate "Bezzavetnyy" (rus.: "Беззаветный", Burevestnik M-class frigate) and a SKR-6 (rus.: CКР-6) Mirka II class light frigate as well as many other Soviet Navy, Coast Guard, KGB and "civilian" ships to intercept the U.S. ships. Soviet aircraft continuously buzzed the Caron and Yorktown as smaller vessels weaved to and fro in front of the American ships. Several times, Soviet vessels and aircraft obtained radar "lock" on the Caron and Yorktown. Both American ships maintained a constant course and speed throughout the incident. Eventually, the Soviets lightly rammed both ships. After the collision, and the threat of the use of weapons and aircraft by both sides, the American ships left the territorial waters of the Soviet Union. No significant damage resulted to any of the ships involved. Yorktown was under repair for 3 months.