According to the Seaway Handbook, what is the maximum breadth for vessels transiting the St. Lawrence Seaway Locks?

The correct measurement for the maximum breadth of vessels able to transit the St. Lawrence Seaway Locks is 76 feet. This specification is crucial for navigation as it ensures that vessels can safely fit into the locks that are designed to accommodate vessels of a certain size. The St. Lawrence Seaway has a series of locks, and these locks have defined dimensions to facilitate efficient shipping while maintaining safety.

The 76 feet width limit ensures vessels can maneuver within the locks without risk of collision with the structure or other vessels. Understanding these dimensions is fundamental for anyone involved in navigation or shipping on the Seaway, as exceeding these dimensions would lead to significant operational issues and require alternative routes or adjustments to be made.