automobiles, and she ran between Tobermory and Manitoulin Island. At this time, Norgoma was converted to diesel power. She became a museum ship in 1977. SS Norisle (Manitoulin Island, Ontario) is a museum ship berthed permanently at the Manitowaning Heritage Complex. It is one of three surviving ships, the others being Norgoma and Normac. It was built in 1946, the first ship built in post-World War II Canada using engines intended for a Royal Canadian destroyer. Norisle ran until 1974, when it was replaced by MS Chi-Cheemaun. Plans call for towing and scuttling Norisle as a tourist dive site. A 200-member group, Friends of The Norisle, has formed to oppose her sinking and supportive articles and letters to the editor have appeared in the Manitoulin Expositor. Passenger and excursion steamers SS Columbia (Detroit, Michigan) is a former Boblo Island excursion boat, built in 1902, which has been in storage since 1991. A New York City group intends to save Columbia and use it on the Hudson River, like the old Hudson day steamers (all of which have been lost). SS Ste Claire (Detroit) , a former Boblo Island excursion boat, was built in 1910. Like her Bob-Lo Amusement Park running mate Columbia, she was designed by Frank Kirby. In July, 2018 an apparently accidental fire destroyed most of her remaining wooden superstructure. Her future afterward was unassuaged. Railroad and auto ferries SS City of Milwaukee (Manistee, Michigan) was a railroad ferry of the Grand Trunk Milwaukee Car Ferry Company which was built in 1931 to replace a previous ferry (, lost in 1929 with all hands). She sailed for the company for 40 years (and another five for the Ann Arbor Railroad) before laying up in Frankfort in 1982, where she remained until being sold as a museum. Later moved to her present berth in Manistee, she is open for tours as the last unmodified, classic railroad ferry. Trillium (Toronto, Ontario) The side-wheel steam ferry (1910), reactivated in 1976, calls Toronto home. Several vintage 1930s screw ferries serve alongside her. Tugboats and workboats Their small size and hardy construction make tugboats a favorite as museum ships. Their smaller size means lower maintenance costs (and maintenance can often be performed by volunteer crews). Three steam tugs survive, in addition to three former Army tugs later used for other purposes. Steam tug Edna G (Two Harbors, Minnesota) The steam tugboat Edna G