The Soviet Azov Boatyard according to a CIA report dated September 1967

An item reported the Soviet Azov Boatyard with as geographic coordinates 47.07.20 north and 39.25.45 east located in the north part of Azov on the south bank of the Don used for series building of unidentified small vessels. The shipyard possessed a side-haul marine railway with 5 slipways,1 fitting out quay and 1 fabrication, 2 shop and 18 support buildings.

Source
The report was published on www.archive.org, document number CIA-RDP78T04759A007300010035-9