Helmy · Yacht Management
Marina in Tuzla, Turkiye
Evliya Çelebi Mah. Tersaneler Cd. No:24 Tuzla/İstanbul
Regional harbour master office of the Turkish Ministry of Transport for Tuzla and the Asian-side shipyard area of Istanbul.
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.