Helmy · Yacht Management
Marina in Erdek, Turkiye
Yalı Mah. Hükümet Cad. Erdek/Balıkesir
Harbour master office of the Turkish Ministry of Transport for Erdek on the Sea of Marmara.
Other
https://www.uab.gov.tr/kurumsal/birimler/
All marinas and harbours on Helmy
Helmy lists marinas port by port, free, with no account needed to look. It is also where a boat keeps her own papers, manuals, log book and orders.