Two weeks after sending my report I received an email with a QSL letter for Varna Radio, call sign LZW, broadcasting a DSC message on 16804.5 kHz. I sent my report to firstname.lastname@example.org .
It is always interesting to see how coastal radio and GMDSS (Global Maritime Distress and Safety System) monitoring is organized. From what I’ve seen it is usually an integrated part of the Coast Guard, which is either integrated in a Department of Transport or in the National Navy. In the case of Varna Radio however the station is embedded in the National Port Authority: Bulgarian Ports Infrastructure Co.
The signature of the QSL was attached in a separate picture: