MV Iyanough is a high-speed ferry that operates for the Woods Hole, Martha's Vineyard and Nantucket Steamship Authority on a route between Hyannis and Nantucket, Massachusetts. Iyanough was built by Gladding-Hearn Shipbuilding to an Incat Crowther design at a cost of $9.7 million and was delivered to the Authority in January 2007. She was christened and commissioned into service during a ceremony on Nantucket Island on March 24, 2007. On the night of June 16, 2017, Iyanough crashed into a jetty in Hyannis harbor, injuring nine passengers.