• Montreal / Lake Ontario March 27, 2015 - 0800 hours (D.S.T.)
• Welland Canal March 27, 2015 - 0800 hours (D.S.T.)
Vessel transits will be subject to weather and ice conditions. Restrictions may apply in some areas until lighted navigation aids have been installed.
The Seaway was scheduled to open on March 28 last season, but heavy ice along portions of the St. Lawrence River and South Shore Canal delayed the opening until March 31. Even then, ships had to be escorted through various sections of the river by an icebreaker.
On April 5, 2014, a ship became stuck in the ice off Cape Vincent before being freed by CGC Griffon. In addition, lock gates had issues operating for nearly a month as ice moved from the lake downbound.
No dates have been indicated for the passing of an icebreaker.