CAEA3494 - Telegraph Narrows
Canadian Hydrographic Service

AIDS TO NAVIGATION
For complete details of aids to navigation, List of Lights, Buoys and Fog Signals must be consulted.

CABLES
The 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.

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.

 Fisheries and Oceans Canada 2020. 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.

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.




