Canadian Hydrographic Service
Central and Arctic Region


CA573408 - Cornwall

96 HOURS NOTIFICATION PRIOR TO ENTERING CANADIAN
WATERS
CAUTION - AIDS TO NAVIGATION
CABLES
ST. LAWRENCE SEAWAY
ST. LAWRENCE SEAWAY VESSEL TRAFFIC CONTROL SYSTEM

96 HOURS NOTIFICATION PRIOR TO ENTERING CANADIAN WATERS
Effective October 11, 2001, 0000 UTC, all vessels that are:
- of 500 tons gross tonnage or more;
- engaged in towing or pushing a vessel, where the combined tonnage of the ship
and the vessel being towed or pushed is 500 tons gross tonnage or more; or
- carrying a pollutant or dangerous goods, or engaged in towing or pushing a
vessel carrying a pollutant or dangerous goods;

must request clearance 96 hours prior to entering Canadian waters from seaward,
or as soon as practical where the estimated time of arrival of the ship in
Canadian waters is less than 96 hours after the time the ship departed its last
port of call. This will remain in effect until further notice.

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.

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
cables 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 cell 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.

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 Montreal 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.

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

LIMITING FACTORS GOVERNING THE TRANSIT OF VESSELS THROUGH THE ST. LAWRENCE
SEAWAY LOCKS, CANALS AND CHANNELS BETWEEN THE PORT OF MONTREAL 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 Montreal and Lake Erie have a controlling
depth of 8.2 metres (27 feet).