- American Maritime Officers
- Representing licensed officers in the U.S. merchant marine. - Baltic and International Maritime Council, The
- World's largest shipping organisation with members in more than 110 countries. British Chamber of Shipping
- Providing a strong and united industry voice.- Hong Kong Shipowners Association
- Representing owners, managers, and suppliers of services. - Hospital Ship International (H.S.I.)
- Nonprofit organisation hoping to assist those considering, studying, planning, converting or operating medical/health care purpose vessels and/or crafts. - International Maritime Organization (2)
Intertanko
- International Association of Independent Tanker Owners.- Marine Engineers Benevolent Association (1)
- Maritime Environmental Research Programme
- Seeks to promote environmental design of ships and offshore installations and make investments in the environment profitable for the owner. - Offshore Marine Service Association
- National trade organisation of offshore vessel operators and affiliated companies. - Pacific Maritime Association (PMA)
- Membership consists of American flag operators, foreign flag operators and stevedore and terminal companies. - Port Everglades Pilots Association
 - Sealanes Seafarers' Communications Center
- Offers services such as Internet facilities, credit union, recreational centre, and postal services to crews and staff of passenger vessels. - Seamen's Church Institute, The
- Advocates for the personal, professional, and spiritual well-being of merchant mariners around the world and promotes safety, dignity, and improved working and living conditions for those serving in the maritime workplace. - Vessel Operators Hazardous Materials Association
- International organisation of ocean common carriers dedicated to improving the understanding of the regulations governing maritime transportation of dangerous goods.
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