Seafarers International Union of North America Email Format

Maritime TransportationMaryland, United States501-1000 Employees

The Seafarers International Union of North America represents professional U.S. merchant mariners who sail aboard U.S.-flag vessels across deep-sea routes, the Great Lakes, and inland waters. Members crew vessels across three shipboard departments—deck, engine, and steward—serving a broad spectrum of ships, including containerships, tankers, military support vessels, tugboats, barges, passenger ships, and gaming vessels. The organization operates within the maritime transportation industry, providing a collective framework for mariners working in various trades and vessel types to support safe, efficient operations at sea and on inland waterways. Based in Camp Springs, Maryland, the union aligns with broader labor movements through its AFL-CIO affiliation and represents workers within a defined U.S. maritime sector.

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