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The Great Lakes Area........ How Navigational Locks The St. Mary’s Falls Canal . The Sault Ste. Marie Ontario Ship Canal... The Welland Canal The St. Lawrence Seaway . Index to Lake Fleet... A Salty Problem ....... Owners and Managers of Lake Vessels............. Aeev~n Nautical Terms ............- 44 American and Canadian Stack Markings .....45, 46, 47 International Flags ....... 48, 49 Foreign Stack Markings Talking Lights .............. Meaning of Boat Whistles seaemewerews Back Inside Cover Nautical Measurements ee Back Inside Cover Steamer Sarnian entering the Davis Lock at Sault Ste. Marie, Michigan, around 1930.