(a) Voluntary associations of United States Registered Pilots will be authorized to establish a pilotage pool or pools in the following areas of the U.S. waters of the Great Lakes designated by the President in Proclamation No. 3385 of December 22, 1960, as amended by Proclamation No. 3855 of June 10, 1968, or in such other areas as the Director may deem necessary to assure adequate and efficient pilotage services for the U.S. waters of the Great Lakes:

(1) District No. 1. All United States waters of the St. Lawrence River between the international boundary at St. Regis and a line at the head of the river running (at approximately 127° True) between Carruthers Point Light and South Side Light extended to the New York shore.

(2) District No. 2. All United States waters of Lake Erie westward of a line running (at approximately 026° True) from Sandusky Pierhead Light at Cedar Point to Southeast Shoal Light; all waters contained within the arc of a circle of one mile radius eastward of Sandusky Pierhead Light; the Detroit River; Lake St. Clair; the St. Clair River, and Northern approaches thereto south of latitude 43°05′30″ N.

(3) District No. 3. All U.S. waters of the St. Marys River, Sault Sainte Marie Locks and approaches thereto between latitude 45°59′ N. at the southern approach and longitude 84°33′ W. at the northern approach.

(b) The Director must determine the number of pilotage pools that will be authorized for establishment by voluntary associations of United States Registered Pilots in order to assure adequate and efficient pilotage services for the United States waters of the Great Lakes.