The USSR in particular had fishing fleets based in Tallin, Kaliningrad and Murmansk working in the area, and each fleet had at least one rescue tug to assist with repairs, diving and towing. Engine breakdowns and nets caught in propellors, collisions between trawlers and medical emergencies were common, and the tugs responded , often towing the effected ships into Halifax wheere they could be repaired.
Here is a look at some of the tugs that called in Halifax:
6. Stremitelniyy [Speedy]has just towed this factory trawler into pier 34. It remained alongside the ship for several days carrying out repairs.
Built 1957, call sign UTWR, broken up 1999.
10. Halifax was not the only port these tugs used. Steregushchiyy is tied up in St.John's, Newfoundland. Note the heavy fender on the stern., and the large strongbacks.
11. Back in Halifax, the same tug has loaded two used Lada automobiles to take back to the USSR. Crews often purchased items not readily available at home, and sold them for a profit.