CAEB3300.TXT - Canal de Beauharnois - East End to Lac Saint-François

Canadian Hydrographic Service
Central and Arctic Region 
CA473300 - Canal de Beauharnois - East End to Lac Saint-François

Bridge Signal Light System

1 - When the ship's stem arrives at the WHISTLE sign, the AMBER
lights on the CAUTION sign start to flash. This acknowledges that the
bridge master has seen the ship and will commence the bridge operation. The
master shall signal the bridge if he does not receive a FLASHING AMBER
light at this time.

NOTE: At this time, the RED BRIDGE NAVIGATION light will be
displayed on the bridge span.

2 - After the bridge master acknowledges the presence of the ship at the
WHISTLE sign, he will commence the bridge raising operation. When the
bridge starts to rise, the RED BRIDGE NAVIGATION lights will commence
flashing.

3 - When the ship's stem is abeam of the CAUTION sign and the GREEN BRIDGE
NAVIGATION lights are displayed, the ship is allowed to proceed through the
bridge draw. If, however, the GREEN BRIDGE NAVIGATION lights are not
displayed at the time the stem of the ship is abeam of the CAUTION sign,
the Master should take any action necessary to ensure that the ship does not
pass the L/A sign before the bridge span is fully raised and the GREEN BRIDGE
NAVIGATION lights are displayed.

NOTE: Under normal conditions the bridge span should be fully raised by the time
the ship reaches the CAUTION sign.