management of the seaway

The St. Lawrence Seaway Management Corporation

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 Saint 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.

SLSMC Mission Statement

We pass ships through a safe and reliable waterway system in a cost effective, efficient and environmentally responsible manner for the benefit of all our stakeholders today and into the future.


The St. Lawrence Seaway Management Corporation and its partners...the transportation system of choice.

Annual Reports