Rezkiy (, "Sharp") was a Project 1135M large anti-submarine ship (, BPK) or Krivak-class frigate of the Soviet Navy. With an armament based around the URPK-4 Metel anti-submarine missile system, the vessel was launched on 17 February 1975. Joining the Pacific Fleet on 2 February the following year, the ship operated primarily in the Indian Ocean, including visits to Ethiopia, India and Mauritius. The vessel was also involved in tracking the cruisers and , as well as searching for a submarine that crossed the Soviet anti-submarine barrier in 1980. In 1981, the vessel sailed as part of a task force along the west coast of the United States to test and measure American defences. After the dissolution of the Soviet Union, the ship joined the Russian Navy. Later that decade, the vessel was rearmed with the URPK-5 Rastrub which provided greater anti-ship capability to the vessel. After nearly twenty years in service, 4 August 1995, Rezkiy was decommissioned and subsequently broken up. Design and development Designed by N.P. Sobolov, Rezkiy was the second Project 1135M Large Anti-Submarine Ship (, BPK) laid down and the eleventh one launched. The vessel is named for a Russian word which can be translated sharp, cutting or sudden. Rezkiy served with the Soviet Navy, and the Russian Navy after the dissolution of the Soviet Union, as an anti-submarine frigate. The ship was redesignated a Guard Ship (, SKR) from 28 July 1977 to reflect the change in Soviet strategy of creating protected areas for friendly submarines close to the coast. Rezkiy displaced standard and full load. Length overall was , with a beam of and a draught of . Power was provided by a combination of two M38K and two M62 gas turbines installed as a COGAG set named М7K, which enabled the ship to achieve a design speed of . Range was at , at , at and at . The ship's complement was 196, including 23 officers. The ship was designed for anti-submarine warfare around four URPK-4 Metel missiles (NATO reporting name SS-N-14 Silex), backed up by a pair of quadruple torpedoes and a pair of RBU-6000 Smerch-2 anti-submarine rocket launchers. The main armament was upgraded to URPK-5 Rastrub (SS-N-14B) from 1984, which provided a much increased anti-ship capacity. Defence against aircraft was provided by forty 4K33 OSA-M (SA-N-4 Gecko) surface to air missiles which were launched from four ZIF-122 launchers. Two twin