The Soviet Kirensk shiprepair yard according to a CIA report dated September 1967

An item reported that the Kirensk shiprepair yard had as geographic coordinates 57.46.30 North and 108.05.40 East located in the north part of Kirensk, Russia on the west bank of the river Lena. Protected by a fence and road served possessed this apparently river craft repair facility over a side-haul railway with 2 transverse repair ways and 10 support buildings.

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