SS Amasa Stone was a 545-foot (166 m) Great Lakes freighter that was sunk as a breakwater in 1965, Charlevoix, Michigan. She was built for the Mesaba Steamship Company by the Detroit Shipbuilding Company of Wyandotte, Michigan. She was launched on March 25, 1905 as hull #158. She was powered by an 1,800-horsepower (1,300 kW) triple expansion steam engine and two scotch marine boilers.