Canadian Hydrographic Service
Central and Arctic Region 

CAEA3361 - GANANOQUE


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.

 

CAUTION-AIDS TO NAVIGATION
Buoys marking a narrow or dredged channel are normally established on the edge of
the channel. Light structures  established to mark the main channel may be located
in shoal water some distance back of the channel edge.


ST. LAWRENCE SEAWAY VESSEL TRAFFIC SERVICES
Traffic Services calling-in point; arrow indicates direction  of vessel movement.


For additional information concerning these services, refer to the Seaway Handbook.


ST LAWRENCE SEAWAY
For information regarding lock data, limiting vessel dimensions and regulations
governing the transit of vessels in the St. Lawrence Seaway between the Port of 
Montréal and Lake Erie, refer to the Seaway Handbook; a current copy of this 
publication must be carried on board all vessels transiting the Seaway and may be 
obtained from the Head Office of the St. Lawrence Seaway Management Corporation, 
Cornwall.

LIMITING FACTORS GOVERNING THE TRANSIT OF VESSELS THROUGH THE ST. LAWRENCE SEAWAY
LOCKS, CANALS AND CHANNELS BETWEEN THE PORT DE MONTRÉAL AND LAKE ERIE.

In the Seaway, the maximum permissible draught is designated by the St. Lawrence
Seaway Management Corporation and the Saint Lawrence Seaway Development Corporation.

The main channels between the Port de Montréal and Lake Erie have a controlling
depth of 8.2 metres (27 feet).