Back to HomeSt. Lawrence Seaway Management Corporation

Notices to Shipping – Montreal/Lake Ontario

2025 – #34 Temporary Increase of Lake Ontario Outflows

October 16, 2025

2025 – #33 Speed Restrictions – MLO Section – Revision #4

October 16, 2025

2025 – #32 Linehandler Training at MLO and GLS Locks

October 3, 2025

2025 – #31 Longitudinal Hydraulic Assistance Tests at Côte Ste. Catherine Lock

September 4, 2025

2025 – #30 Commissioning Completed – Hands Free Mooring System at Iroquois Lock

August 22, 2025

2025 – #29 Speed Restrictions – MLO Section – Revision #3 (Revised 2025/10/16)

August 19, 2025

2025 – #28 Speed Restrictions – MLO Section – Revision #2 (Revised 2025/08/19)

August 12, 2025

2025 – #27 Speed Restrictions – MLO Section Revision #1 (Revised 2025/08/12)

August 8, 2025

2025 – #26 Low Water Levels St-Louis Lake (Revised 2025/08/08)

August 5, 2025

2025 – #25 Ships Only Permitted to Use Radar Set on Short Range of Three Nautical Miles or Less at Locks – Revision #1

July 15, 2025

2025 – #24 New Access Procedure at Iroquois Lock

July 14, 2025

2025 – #23 Water Flows Unavailable for Moses-Saunders, Pointe des Cascades, Carillon and Beauharnois

July 2, 2025

2025 – #22 Water Flows Unavailable for Moses-Saunders, Pointe des Cascades, Carillon and Beauharnois

June 30, 2025

2025 – #21 Linehandler Training at MLO and GLS Locks

June 30, 2025

2025 – #20 Brockville Fireworks

June 27, 2025

2025 – #19 Request to Reduce Speed – Copeland Cut

June 26, 2025

2025 – #18 Ships Only Permitted to Use Radar Set on Short Range of Three Nautical Miles or Less at Locks (Revised 2025/07/15)

June 26, 2025

2025 – #17 Fireworks at La Ronde – Port of Montreal

June 24, 2025

2025 – #16 Meeting Restrictions for a Deadship Leaving the Port of Montreal

June 20, 2025

2025 – #15 Commissioning of the Hands Free Mooring System at Iroquois Lock

June 6, 2025

2025 – #14 Resumption of Deliveries at St. Lambert Lock

June 6, 2025

2025 – #13 Request to Reduce Speed in Sensitive Areas

June 4, 2025

2025 – #12 Linehandler Training at MLO

June 3, 2025

2025 – #11 Water Flows Unavailable for Moses-Saunders, Pointe des Cascades, Carillon and Beauharnois

May 27, 2025

2025 – #10 Water Flows Unavailable for Moses-Saunders, Pointe des Cascades, Carillon and Beauharnois

May 22, 2025

2025 – #9 Vessel Self Spotting and Hands Free Mooring Systems at Iroquois Lock

May 20, 2025

2025 – #8 Linehandler Training at GLS Locks

April 28, 2025

2025 – #7 Linehandler Training at MLO

April 25, 2025

2025 – #6 Bridge Raising Sequence for Downbound Ships at St. Lambert Lock

April 10, 2025

2025 – #5 Operations of Bridges 7A & 7B – Revision #1

March 27, 2025