Yastreb - class guard ship The " Yastreb " class guard ships were built for the Soviet Navy as small patrol and escort ships . Fifteen out of twenty planned ships were laid down before the start of " Operation Barbarossa " , but only one was completed during World War II . Five others were completed after the war , but five were scrapped on the stocks at Nikolayev when it was captured by the Germans in late 1941 , four were scrapped by the Soviets at Leningrad and five were cancelled before they were laid down . The postwar ships were completed to a modified design as Project 29K . One of these was transferred to the NKVD . The last of the ships was scrapped in 1975 . Design . The " Yastreb " class guard ships were designed to replace the unsatisfactory that had preceded them . The " Uragans " had proven to be too small for the weight of their armament , too slow and bad seaboats because of their excessive top - weight . While almost twice the displacement of the older ships , the " Yastrebs " had only one additional main gun to minimize the type of stability problems suffered by their predecessors . General characteristics . The Project 29 ships were longer than their predecessors , at overall . They had a beam of and at full load a draft of . They were significantly heavier than the " Uragan " class ; the " Yastreb " class ships displaced at a standard load , and at full load , nearly twice the at standard load of the earlier ships . The Project 29K ships had a deeper draft of at full load and they were slightly heavier than their half - sister ; they displaced at a standard load , and at full load . Their crew increased to 127 men , an increase of 15 men over " Yastreb " . Armament . The intended main armament was three single " B - 34 " guns , protected by gun shield s , although some ships reportedly substituted three of the naval version of the " 52 - K " anti - aircraft guns . Four AA machine guns were also carried . The underwater armament consisted of one triple torpedo tube mount , fitted between the funnels , and up to 40 mines . Propulsion . The " Yastreb " had 2 - shaft geared steam turbines producing that propelled her to . Her endurance was at . The Project 29K ships used the same machinery , but were half a knot slower , and had only a range of at . Construction . The construction of all the Project 29 ships was interrupted by " Operation Barbarossa " in 1941 . Those ships furthest along were suspended for the duration of the war , although the " Yastreb " , as the lead ship of the class , was just over half - complete on 22 June 1941 and was finished at the end of 1944 after the Siege of Leningrad was broken in early 1944 . Most of the others were scrapped or canceled . Eleven more ships were intended to be laid down in 1942 and another eight in 1943 , but the war ended that plan . Five other ships had made significant progress before the Germans invaded and were completed to a revised design , Project 29K , after the war . This was slightly larger , added four single " 61 - K " AA guns , and a pair of depth charge throwers in lieu of the mines . The six ships that were to start construction at the Ordzhonikidze Shipyard in Sevastopol actually had their material prepared at Marti South in Nikolayev and shipped to Sevastopol for building . Similarly the three ships launched , but not completed by the end war , at the Zhandov Shipyard in Leningrad were towed to the former Schichau - Werke shipyard in Kaliningrad for completion . Career . Little is known about their careers . " Yastreb " reportedly became a training ship on 17 February 1956 , before becoming a target ship on 31 August 1956 and sold for scrap on 12 September 1959 . " Orel " became a floating barracks on 31 January 1964 before being sold for scrap on 18 September 1969 . " Korshun " may have been transferred to the Border Guards for several years , before being returned to the Navy in 1952 . She was sold for scrap 31 January 1964 . " Zorkii " also appears to have been transferred to the Border Guards upon completion before being returned in 1952 . She became a training ship on 18 October 1956 and was sold for scrap on 4 November 1975 . " Burevestnik " became a training ship on 17 February 1956 and was sold for scrap on 28 January 1958 . " Al ' batros " also became a training ship at the same time and was sold for scrap on 28 February 1961 .