The River Queen was a sidewheel steamer launched in 1864. It soon became closely associated with President Abraham Lincoln and General Ulysses S. Grant while operating on the Potomac River, and was used for an unsuccessful peace conference in 1865 during the last year of the American Civil War. Later it operated as a ferry serving the islands of Martha's Vineyard and Nantucket during the late 19th century. Late in its career, it returned to the Potomac as an excursion vessel, and in 1911, it was destroyed in a fire.

The Woods Hole, Martha's Vineyard and Nantucket Steamship Authority, doing business as The Steamship Authority (SSA), is the statutory regulatory body for all ferry operations between mainland Massachusetts and the islands of Martha's Vineyard and Nantucket, as well an operator of ferry services between the mainland and the islands. It is the only ferry operator to carry automobiles to and from the islands. The Authority also operates several freight vessels, thus serving as the main link for shipping any commercial goods that are not transported using the airports on Nantucket or Martha's Vineyard.