Iyanough was built by Gladding-Hearn Shipbuilding to an Incat Crowther design at a cost of $9.7 million[1] and was delivered to the Authority in January 2007.[3] She was christened and commissioned into service during a ceremony on Nantucket Island on March 24, 2007.[1]Iyanough measures 154 feet (47 m) in length, with a beam of 39 feet (12 m), and draws 5.3 feet (1.6 m).[3] She is powered by four MTU diesel engines, which give her a top speed of 38 knots (44 mph) when fully loaded.[3] She has a passenger capacity of 393, with 350 indoor seats and 40 on the outer deck.[1]
On the night of June 16, 2017, Iyanough crashed into a jetty in Hyannis harbor, injuring fifteen passengers.[4][5][6][7][8][9][10]
