US Coast Guard CFR 33 details regulations pertaining to navigation and navigable waters. The title is made of three volumes, written by different agencies, including: the US Coast Guard, the Army Corp of Engineers and the Saint Lawrence Development Corporation.

US Coast Guard CFR 33 and CFR 46 Regulations - Pub. 515 - U.S. Coast Guard 515 Rules & Regulations for Foreign Vessels Operating in US Waters - 12th months subscription.