- International Maritime Organization
- Marine Administrations
- European Union
- ICS and ISF (Maritime International Secretariat)
- U.S. Coast Guard
- Lloyds Register
- Maritime and Port Authority of Singapore
- Fairplay
- Lloyds List
- Journal of Commerce
- Maritime Global Net
- Hellenic Shipping News
- World Sea Ports - maritime resources
- Marine traffic
- Central Commission for the Navigation of the Rhine
- Danube Commission