Floating workshops are designed for urgent repair of ships, their weapons and technical equipment in areas remote from the main points of deployment. They have machinery equipment and lifting devices.

Floating Workshop PM-56 laid down 08 March 1973 at the Stocznia Szczecinska im. A. Warskiego Shipyard, Szczecin, Poland (yard No.304/12), launched 16 June 1973, commissioned 23 November 1973 and was assigned to the Black Sea Fleet.

Now in service.