The Yurka class were a group of minesweepers built for the Soviet Navy and export customers between 1963 and 1970. The Soviet designation was Project 266 Aquamarine. A new seagoing minesweeper design was requested in 1957 to follow the T43 class minesweeper into the Soviet Navy. The design was approved in 1959 and entered service in 1963. Major improvements in mine detection and anti mine explosion protection were implemented. Magnetic, acoustic and electric signatures were reduced.

The hull was built of low magnetic steel, and was divided into nine water-tight compartments. The artillery weapons of the ship consisted of two 30-mm AK-230 guns.

The Yurka class ships are equipped with two diesel engines of 500 hp and two controllable pitch propellers. The minesweeper's full speed was 16 knots and up to 14 knots with one sweep. From 1964 to 1970 there were built more then 40 minesweepers.

Seagoing Minesweeper Alexandr Kazarsky laid down on 30 December 1963 at the Sredne-Nevsky Shipyard, Pontonny (yard No.994), launched on 31 March 1966, commissioned on 30 August 1966 and assigned to the Black Sea Fleet.

Alexandr Kazarsky was decommissioned and excluded from the lists of the Black Sea Fleet on 19 April 1990 and scrapped.