Charles A. Dunning) was a propeller-driven steamer that served as a ferry to Martha's Vineyard and Nantucket in Massachusetts; in Rockland, Maine; Stamford, Connecticut and Oyster Bay, Long Island in the United States from 1911 to 1940.

Because of this, the ladies' parlor and toilet was situated on the upper deck in a location to reduce the motion and vibration while on the rough waters of Vineyard Sound.

[4][5] The ship was powered by a triple expansion engine fed by steam from four Almy water-tube boilers turning the two propellers.

[1] In Canadian naval service, the ship had standard displacement of 459 long tons (466 t), a complement of 3 officers and 39 ratings and the vessel was armed with one .303 machine gun.

[8] On the night of June 30, 1924, Sankaty caught fire and burned down to her steel hull while tied up overnight in New Bedford harbor.

[4] She drifted across the Acushnet River in flames and crashed into the whaling ship Charles W. Morgan, setting her on fire as well.

[5] In 1994, The Woods Hole, Martha's Vineyard and Nantucket Steamship Authority began service of a new freight vessel Sankaty, named after this steamer.