Since 2014 CDB Baltsudoproekt (design affiliate of the Krylov State Research Centre) has been engaged in the design of seagoing tugs of Project 23470 for the Russian Navy. The notable design features of these vessels include fully electric propulsion system, crane with roll damping, and helideck.

The tug is intended for towing of vessels, floating facilities and structures in ice-covered and ice-free water; assistance to vessels within port water area and mooring operations; escort operations in sea; extinguishing of fires on floating and shore-based facilities, extinguishing of fuel burning on water surface; refloating of ships and vessels.

Seagoing Tug Sergey Balk laid down 30 October 2014 at the Yaroslavsky Shipbuilding Plant (yard No.410), launched 27 December 2016, commissioned 21 February 2020 and was assigned to the Black Sea Fleet.

Now in service.