Helmy · Yacht Management
Marina in Ploče, Croatia
Trg kralja Tomislava 24, 20340 Ploče
Main harbour master's office for the Ploče district under the Ministry of the Sea. Yachts in this district handle vessel and port formalities here.
Other
https://mmpi.gov.hr/sea/harbormasters-offices/8461
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.