Canadian Hydrographic Service
Central and Arctic Region

CA373091 - Lake Ontario (Western Portion)

COURSE 
Bearings and distances of sailing courses indicated in magenta are recommended by the Lake Carriers' Association and the Canadian Shipowners Association.

AIDS TO NAVIGATION
For complete details of aids to navigation, the larger scale charts, Radio Aids to Marine Navigation, and List of Lights, Buoys and Fog Signals must be consulted.

FIRING PRACTICE AND EXERCISE AREAS
Limits of Firing Practice and Exercise Area. See Notice to Mariners No. 35 of each year.

ST. LAWRENCE SEAWAY VESSEL TRAFFIC CONTROL SYSTEM
Traffic Control calling-in point with number; arrow indicates direction of vessel movement.

THE 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 de Montréal 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 handbook can be obtained from the Information Office, St. Lawrence Seaway Management Corporation, Cornwall. 

CABLES
For the mariners safety, all submarine and overhead cables are assumed to
conduct electric power at high voltages and contact with or proximity to these
poses an extreme danger.  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.  However if anchors become hooked onto a
cable care must be taken not to sever the cable.  Cables installed since the date
of publication of this ENC may not be charted.  Sufficient clearance must be
allowed under all overhead cables.  Actual clearances may differ from charted
values due to changes in atmospheric conditions, ice buildup and/or water
levels.  For additional information, consult Notice to Mariners No.  16 of each
year and the appropriate volume of CHS Sailing Directions.

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 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.

In addition, this product contains U.S. Government works or data, and is published with the authorization of the Office of Coast Survey. No copyright is claimed by the United States Government under Title 17 U.S.C. with regard to their works or data contained in this product. Therefore no license is required from the U.S. Office of Coast Survey to reproduce or distribute U.S. data shown on this product.