Foss Maritime (formerly Foss Launch and Tug Company) is an American shipping company. The company was founded in 1889 by Thea Foss (1857–1927) and her husband Andrew Foss. The company is now the largest tug and towing concern on the west coast of the United States. July 2, 2013, Foss Marine Holdings announced that (effective at that date) it merges all of its operations and resources under a single name: 'Foss Maritime Company'.