An item reported that this harbour was
used as an anchorage by the fishery and the coastal cargo trade.
The Bulgarian harbour Balchik according
to an American CIA report dated 13 March 1953
An item reported that this harbour was
used by naval ships although it was (yet) not known of the ships belonged to
the Bulgarian either Soviet forces. An airfield with a concrete made runway and
length of around 1.800 metres was available.
Source
The report was published on
www.archive.org, document number CIA-RPD80-00810A000500330005-5.