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CONTENTS Meaning of Buoys...............0.. Inside Front Cover Publisher. 253 05 ba bade pee eee baw ees wea aewa ne 1 The Great Lakes... 2... eee eee. 4 St. Marys Falls Canal... 2.2... ee eee eee 6 Sault Ste. Marie, Ontario Ship Canal. ................ 7 The Welland Canal... 2.2... ee eee 7 The St. Lawrence Seaway... 1... ee 8 How the Locks Operate............0.. 0.0.00 00000 e 9 Meaning of Boat Whistles... ........... 00000000008 10 Nautical Measurement .. 0.0.0.0... eee eee 10 Index to Lake Fleet... 2.2... ee ee eee ee 12 St. Lawrence Seaway and Great Lakes Waterway Map..........-.+-0--05 24-25 Rules to Remember... 2... cece ce eee eee 31 Storm) WanhifS:..2 2. .0sas%e ae ss ead eee iatens eaee dame 32 Owners and Managers of Lake Vessels... .......--0005 34 Nautical Terms... ee ete 41 Stack Markings, U.S.A. and Canada.............055- 42-43 International Flags... 2... eee eee 44-45 Stack Marking, World Over... 6.200000 eee e eee 46-47 Mileage Between Ports... 6... 0.2 e eee eee 48 How the Locks Operate... 6... eee eee eee 60 Lights