An item reported that the Soviet
Shipping Company Kaspflot possessed in 1951 the single screw tug Besposchadny,
built in 1948, speed 13 knots, fitted out with a 500hp diesel engine and which
was in satisfactory condition.
Source
The
report was published on www.archive.org,
document number CIA-RDP82-00047R000200350002-8