2026 – #6 Speed Restrictions – MLO Section

March 20, 2026

2026 Opening – Seaway Radio Message #1

March 20, 2026

2026 – #5 Bunkering and Transfer of Chemicals/Sludge at Wharf 2 & Wharf 16

March 19, 2026

2026 – #5 Operations of Bridges 7A & 7B

March 19, 2026

2026 – #4 Opening Ceremony at Lock 3 – March 24, 2026

March 19, 2026

2026 – #3 Personnel Interfaces with Ships at the Locks in the Welland Canal

March 19, 2026

2026 – #2 Ship Chandler Interfaces with Ships at the Wharves in the Welland Canal

March 19, 2026

2026 – #1 General Instructions

March 19, 2026

2026 – #4 Opening Ceremony at St. Lambert Lock – March 23, 2026

March 18, 2026

2026 – #3 General Notice

March 18, 2026

2026 – #3 Final Mooring Position Tolerances for Full Sized Ships Using HFM

March 18, 2026

2026 – #2 Interfaces with Ships at Canadian Locks Under MARSEC 1

March 18, 2026

2026 – #1 General Instructions

March 18, 2026

2026 – #2 Revised Ship Inspection Fees

March 6, 2026

2026 – #1 Opening / Closing Dates of the 2026 Navigation Season and Maximum Allowable Drafts

February 19, 2026

2026 Increase of Seaway Tariffs

February 9, 2026

2025 – #19 Closing of the 2025 Navigation Season – Welland Canal

January 13, 2026

2025 – #18 Closing of the 2025 Navigation Season – Montreal-Lake Ontario Section

January 12, 2026

2025 – #17 Closing Period for the 2025 Navigation Season – Public Safety Notice

January 9, 2026

Public Safety Notice – Ice Conditions Near Navigation Channels

January 7, 2026

2025 – #16 Seaway Closing – Update

December 22, 2025

2025 – #15 Maximum Permissible Draft – Montreal to Lake Ontario and Welland Canal

December 15, 2025

2025 – #19 Dredging Wharf 10 / Guard Gate

November 18, 2025

2025 – #39 Speed Restrictions – MLO Section – Revision #5

November 13, 2025

2025 – #38 Temporary Change to Deliveries at St. Lambert Lock

November 7, 2025

2025 – #37 Linehandler Training at MLO and GLS Locks – Revision #1

November 6, 2025

2025 – #36 Low Water Levels Below St. Lambert Lock

November 5, 2025

2025 – #35 Linehandler Training at MLO and GLS Locks (Revised 2025/11/06)

November 3, 2025

2025 – #14 Closing of the 2025 Navigation Season

October 17, 2025

2025 – #18 Wharf 13 – Revised Maximum Drafts – Revision #1

October 17, 2025