The Soviet steam tug Ivan Korobov according to a CIA report dated 1949

An item reported that part of the fleet of the Soviet Ministry of the River Fleet was the steam tug Ivan Korobov captain Bochkarev of the Moscow Canal Shipping Company, latest identified on 31 August 1948.

Source

The report was published on www.archive.org, document number CIA-RDP83-00415R001700110003-7