The Soviet Astrakhan shipyard Krasnyy Muravey according to a CIA report dated September 1967

An item reported the Soviet Astrakhan shipyard Krasnyy Muravey with as geographic coordinates 46.12.25 north and 47.52.00 east located 10 nautical miles south west of the centre of Astrakhan on the south bank of a small tributary of the Starya Volga used for building floating cranes. The shipyard possessed 1 side-haul marine railway, 2 building slipways for which 2 cranes were available, 1 quay, 1 pier and 1 fabrication, 3 shop and 9 support buildings.

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