Gray Marine

Gray Marine was the marine engine brand of the Gray Marine Motor Company of Detroit, an American maker of boat engines that is recorded as active between 1910 and 1967. Its engines ranged from one to six cylinders, first as gasoline engines and later as diesels, and powered pleasure boats, work boats such as fishing boats, lobster boats and tugs, and military craft. The firm built its own engines until about April 1924 and after that mostly converted automotive engines from other makers, including Hercules, Studebaker, Pontiac, Continental, American Motors and the General Motors Diesel Division. During the Second World War it marinized General Motors 71 series diesels for landing craft, among them the vessels used with Higgins boats. Continental Motors bought the company in June 1944 and closed it around 1967.