- International Maritime Organization (IМО)
- The International Association of Ports and Harbors (IAPH)
- International Harbour Masters' Association
- International Telecommunication Union (ITU)
- International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA)
- International Transport Forum
- The Federation Of National Associations Of Ship Brokers And Agents
- International Federation Of Freight Forwarders Associations /FIATA/
- European Union
- EC Mobility and transport
- Port Harbours Marinas Worldwide
- TRACECA
- Baltic And International Maritime Council Organization (BIMCO)
- European Federation of Inland Ports (EFIP)
- Transport Events Management
- United Nations Economic Commission For Europe (UNECE)
- European Sea Ports Organisation (ESPO)
- The Black Sea Economic Cooperation (BSEC)
- Baltic Ports Organisation
- American Association Of Port Authorities (AAPA)
- United States Coast Guard
- European Maritime Safety Agency (EMSA)
- Inland Navigation Europe (INE)
- Ministry of Transport, Information Technology and Communications
- Bulgarian Ports Infrastructure Company
- Executive Agency "Maritime Administration"
- Executive agency for exploration and maintenance of the Danube river
- Operational programme on Transport and Transport Infrastructure
- Port of Varna
- Port of Burgas
- Port Lesport
- Port Balchik
- Port of Vidin
- Port Complex Ruse
- "Varna Pilot Station" Co Ltd.
- "Burgas Pilot Statin" Ltd.
- Bulgarian Chamber of Shipping
- Bulgarian Association of Ship Brokers and Agents (BASBA)
- Bulgarian National Freight Forwarding Association
- Navigation Maritime Bulgare (NAVIBULGAR®)
- Bulgarian River Shipping J.S.Co.
- "Marine Antipollution Enterprise" JSCo
- “Bulyard shipbuilding industry” EAD
- Odessos Shiprepair Yard S.A.
- TEREM-SHIPYARD Flotski Arsenal – Varna
- MTG DOLPHIN PLC