SLSMC Management
The St. Lawrence Seaway Management Corporation is a not-for-profit corporation responsible for the safe and efficient movement of marine traffic through the Canadian Seaway facilities, which consists of 13 of the 15 locks between Montreal and Lake Erie. The Corporation plays a pivotal role in ensuring that the waterway remains a safe and well-managed system, which it shares with its American counterpart, the Great Lakes St. Lawrence Seaway Development Corporation.
The Corporation’s mandate promotes efficiency and responsiveness to the needs of shipping interests, ports, marine agencies, and provincial and state jurisdictions.
Our Purpose
We connect Canada and the Great Lakes to the World.
Our Vision
To be a world-class trade corridor trusted for safety, recognized for leadership, and celebrated for its innovation and the people who keep trade flowing to the world.
Our Mission
We ensure the Seaway remains reliable so vessels move safely, trade flows smoothly, and communities thrive. Each transit is a vital connection – linking people, cargo, and opportunity – powered by our dedicated team, innovative spirit, and commitment to a sustainable future that delivers shared values.
Our Values
Safety and Wellbeing
Collaboration
Integrity
Innovation



