Seaway Notices

Seaway Notices address issues specific to a given navigation season, and serve to complement the regulations found in the Seaway Handbook. The notices (which take the form of general Seaway notices applicable to the entire St. Lawrence Seaway, and regional notices which may be applicable to the Montreal / Lake Ontario region or to the Welland Canal) are disseminated via e-mail broadcasts to subscribers.

To subscribe free of charge to receive Seaway Notices and / or Radio Messages, click here.

2020 – #18 Transit Requirements under High Flow Conditions – Cancelled

May 25, 2020

2020 – #17 Maximum Permissible Draft – Montreal to Lake Ontario

May 25, 2020

2020 – #16 Transit Requirements – Operational Bow Thruster (Cancelled 2020/05/25)

May 1, 2020

2020 – #15 HFM Cast-Off Procedure for Upbound Ships in Canadian Locks

April 30, 2020

2020 – #14 Transit Requirements – Operational Bow Thruster (Cancelled 2020/05/01)

April 9, 2020

2020 – #13 Restriction on Passenger Vessels

April 6, 2020

2020 – #12 SLSMC Security Monitoring

April 1, 2020

2020 – #11 Limitations to Interfaces at Canadian Locks due to COVID-19 – Revised

March 25, 2020

2020 – #10 Limitations to Interfaces at Canadian Locks due to COVID-19 (Cancelled 2020/03/25)

March 20, 2020

2020 – #9 Transit Requirements under High Flow Conditions (Cancelled 2020/05/25)

March 19, 2020

2020 – #8 Maximum Permissible Drafts

March 17, 2020

2020 – #7 Reporting Dangerous Cargo

March 17, 2020

2020 – #6 Tie-Up Service at Lock Approach Walls

March 17, 2020

2020 – #5 Notification Requirement for Use of Lines at HFM Locks

March 17, 2020

2020 – #4 General Notice

March 17, 2020

2020 – #3 Communications

March 17, 2020

2020 – #2 Mooring and Casting off in Locks

March 17, 2020

2020 – #1 Opening of the 2020 Navigation Season and Maximum Allowable Drafts

February 25, 2020

#18 – Revised Transit Requirements under High Flow Conditions

December 10, 2019

#17 – Closing of the 2019 Navigation Season

December 4, 2019

#16 – Maximum Permissible Draft – Montreal to Lake Ontario

October 1, 2019

#15 – Transit Requirements under High Flow Conditions – Revised

August 28, 2019

#14 – Safe Exit of a Lock

August 7, 2019

#13 – Maximum Permissible Draft – Montreal to Lake Ontario (Cancelled 2019/10/01)

July 15, 2019

#12 – Embarking / Disembarking at Seaway Locks

June 24, 2019

#11 – Restrictions to Ship Inspections

June 10, 2019

#10 – Transit Requirements under High Flow Conditions (Cancelled 2019/08/28)

June 4, 2019

#9 – Maximum Allowable Drafts – Montreal Lake Ontario Section

April 3, 2019

#8 – Notification Requirement for Use of Lines at HFM Locks

March 22, 2019

#7 – Reporting Dangerous Cargo

March 19, 2019