CA373071 - Main Duck Island To Scotch Bonnet Island 
Canadian Hydrographic Service

CABLES
he symbols for submarine and overhead cables do not differentiate between cables
conducting electric power, often at high voltages, and other types of utility cables.
Mariners are advised to exercise caution when passing under all overhead cables and
to avoid anchoring or conducting seabed operations in the vicinity of submarine cables.
The clearance of an overhead cable may differ from its charted value due to changes
in atmospheric conditions, water levels and other factors. For additional information,
consult Notice No.16 in the Notices to Mariners, Annual Edition and the appropriate
volume of CHS Sailing Directions.

COURSE
The recommended courses have been adopted by the Lake Carriers' Association (U.S.A) and the Chamber of Marine Commerce (Canada).

ST. LAWRENCE SEAWAY VESSEL TRAFFIC CONTROL SYSTEM
Traffic control calling-in point; arrow indicates direction of vessel movement.
For additional information concerning these services, refer to the "Seaway Handbook".

THE GREAT LAKES  ST. LAWRENCE SEAWAY SYSTEM
For information regarding lock data, limiting vessel dimensions, and regulations
governing the transit of vessels in the St Lawrence Seaway between the Port de
Montral and Lake Erie, refer to the SEAWAY HANDBOOK of which a current copy must
be carried on board all vessels transiting the Seaway.  A copy of the "Seaway Handbook"
can be obtained from the St Lawrence Seaway Management Corporation, Cornwall.  

See Notices to Mariners for subsequent corrections on this chart and Notices to Shipping
in force for hazards or changes essential for the safety of navigation. 

 Fisheries and Oceans Canada 2022. Published by the Canadian Hydrographic Service. 
A licence is required from the Canadian Hydrographic Service (www.charts.gc.ca) to 
reproduce or distribute this work.
