The Sorum class, Soviet designation Project 745, is a series of seagoing tugs built for the Soviet Navy and KGB Border Troops, and later operated by the Russian Navy and FSB Border Service.

[3] These vessels perform the standard missions of a seagoing tugboat with other missions such as protecting and patrolling Russian maritime borders, enforcing navigational rules and law enforcement, search and rescue, and fisheries protection.

Externally, the Projects 745MB and 745MBS tugs can be distinguished from the original Project 745 tugs by twin funnels instead of one.

A Project 745P border patrol ship was involved in an incident involving Greenpeace vessel where the Russian ship fired warning shots, and later seized a Greenpeace vessel after they attempted to board an oil rig in the Arctic in 2013.

[7] Another Project 745P border patrol ship rammed a Ukrainian tug in the Kerch Strait on November 25, 2018.