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Canadian Aids to Navigation System 2011
United States Aids to Navigation Boating Information

Differential Global Positioning System (DGPS) in Canada

On December 15th, 2022, the Canadian Coast Guard has permanently discontinue the provision of its DGPS service across Canada.

Discontinuing this service aligns with Coast Guard’s efforts to modernize marine navigation services and find alternatives to aging DGPS infrastructures.

Table of Content

United States Aids to Navigation Boating Information

Aids to Navigation, Boating Information

United States Coast Guard navigation rules may be obtained at all United States Coast Guard District Offices or by phone:

U.S. Government Printing Office (Bookstore) Tel.: 1 (202) 512-1800


U.S. charts may be purchased from local distributors in both the United States and Canada or through the National Oceanic and Atmospheric Administration at:

FAA, AeroNav Products AJV-3
6500 S. MacArthur Blvd
Oklahoma City, OK 73169
Tel.: (405) 954-3027
AeroNav Products

Mail orders must be accompanied by a cheque or money order payable (in U.S. funds). For more information please call the number above.

The limits and numbers of U.S. charts along the St. Lawrence Seaway and throughout the Great Lakes can also be found in Canadian Hydrographic Service Chart Catalogue 3.

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