Mariner Alerts

ALERT: The first right whale sighting in the Gulf of St. Lawrence occurred on Sunday April 25. 

It is time for shipping to slow down.  

Cabot Strait Voluntary Slowdown

April 28 - June 29 + September 29 - November 15, 2021


Cabot Strait is a key migratory pathway for the critically endangered North Atlantic Right Whale.

To help prevent a lethal collision with these whales, vessels transiting through Cabot Strait are requested to voluntarily slow down to 10 knots or less over the ground, when safe to do so.

Please find more information about the Voluntary Slowdown from the following English, French and multilingual flyers.


Need more background information? 

Check out these documents for additional information on right whale critical habitat and distinguishing features!