33 C.F.R. § 401.36 Order of passing through.
Title 33 - Navigation and Navigable Waters
Vessels shall advance to a lock in the order instructed by the vessel traffic controller.
Title 33: Navigation and Navigable Waters
PART 401—SEAWAY REGULATIONS AND RULES
Subpart A—Regulations
Seaway Navigation
§ 401.36 Order of passing through.