- Aegean Oil
- ANEK Lines
- Arab Maritime Petroleum Transport Company (AMPTC)
- ARIES Risk Group
- AZORA Marine Co.
- BMF Port Burgas
- BP
- CARRAS (HELLAS) S.A.
- Cyprus Port Authority
- CHRONOS Shipping Ltd.
- DANAOS
- Dileton Maritime
- Det Norske Veritas (DNV)
- ELPE (Hellenic Petroleum)
- Epsilon Hellas
- Estoril Navigation Ltd.
- Flisvos Marina
- Gulf Marine Management S.A.
- Harbor Shipping & Trading S.A.
- Harmonia Shipping Management Inc.
- ICTS (International Consultants on Target Security)
- Jet Tank Maritime
- Mac Gregor (GRC) Ltd.
- Mantinia Shipping CO. S.A.
- Maran Tankers Management (MTM)
- Mare Inernational Ltd.
- Marine Management Services M.C. (MMS)
- NEDA Maritime Company Ltd.
- Neptune Lines.
- OLP A.E. (Pireaus Port Authority)
- OCEONIX Services Ltd.
- PrimeBulk
- Privatsea Yachting
- SETE Yacht Management S.A.
- SNEAL S.A.
- Scandinavian Near East Agency
- Southpoint Maritime
- STYGA Compania Naviera S.A.
- Travco Group
- UNDP
- VAL Enterprises
- VTTV Cyprus
- Zanzibar Maritime Authority
- Zenith Gemi Isletmeciligi A.S.
