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37 companies

R K Johns & Associates Inc

New York, New York, United StatesUpdated May 2026

The American Association of Port Authorities represents more than 140 public port authorities in the United States, Canada, Latin America and the Caribbean. In addition, the Association represents over 250 sustaining and associate members, firms and individuals with an interest in seaports of the Western Hemisphere.

Risavika Havne-Service AS

4098 Tananger,, NorwayUpdated Apr 2006
Port Agent

Risavika Havne-Service AS is a maritime service company based in Tananger, Norway, providing port and harbor services.

Superior Marine Inc

South Point, OH, United StatesUpdated May 2026

Superior Marine, Inc. is a maritime services company based in South Point, Ohio, providing barge and towboat repair, harbor services, precision paint systems, IRDC cleaning, and new construction with over 40 years of industry experience.

The Stewart Group Ltd

Blackheath,, London, United KingdomUpdated Oct 2004
Port Agent

The Stewart Group Ltd is a maritime services company based in London, United Kingdom, offering port agency and towage services.

Thomas J. Brown & Sons Inc.

Staten Island, NY, United StatesUpdated Nov 1998

Thomas J. Brown & Sons Inc. is a Staten Island-based tugboat and marine towing company providing ship assist and harbor services in New York Harbor. The company was acquired by Seaward Marine Corporation of Norfolk, Virginia in 2022.

Waterfront Services Co

Cairo, IL, United States

Waterfront Services Co. is an employee-owned company providing harbor and shipyard services, including midstream switching, towing, barge repair, and floating crane operations on the inland river system since 1967.

Wepfer Marine Inc.

Memphis, TN, United StatesUpdated Nov 1998

Founded in 1972, Wepfer Marine Inc. operates harbor and fleeting services in nine locations along the Lower Mississippi, Ohio, and Tennessee Rivers. Its Memphis shipyard on McKellar Lake offers drydocking, welding, mechanical, and crane services.

Wilmington Transportation Co.

San Pedro, CA, United StatesUpdated Nov 1998

Wilmington Transportation Company (1884-1997) was a historic Southern California maritime company incorporated by Phineas Banning that operated coastal steamer service between San Pedro and Santa Catalina Island. It became a subsidiary of the Santa Catalina Island Company and ceased operations in 1997.