33 C.F.R. § 3.45-20 Detroit Marine Inspection Zone and Captain of the Port Zone.
Title 33 - Navigation and Navigable Waters
(a) The Detroit Marine Inspection Office and the Detroit Captain of the Port Office are located in Detroit, Michigan. (b) The Detroit Marine Inspection Zone and Captain of the Port Zone include all navigable waters of the United States and contiguous land areas within the following boundaries: From latitude 42° N., longitude 84°30'W.; thence due east to the international boundary; thence northerly along the international boundaries to latitude 44°43' N.; thence due west to longitude 84°30' W.; thence due south to the starting point.
Title 33: Navigation and Navigable Waters
PART 3—COAST GUARD AREAS, DISTRICTS, MARINE INSPECTION ZONES, AND CAPTAIN OF THE PORT ZONES
Subpart 3.45—Ninth Coast Guard District
§ 3.45-20 Detroit Marine Inspection Zone and Captain of the Port Zone.
