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U.S. Coastal and Internal Waters – U.S. Federal Aids to Navigation – Datum Shift to WGS 84

The positions of Aids to Navigation contained in the U.S. Light List Volumes will be converted to WGS 84 to align with Datum used on Official U.S. Electronic Navigational Charts (ENC) issued by the U.S. Hydrographic Offices (NGA, NOAA, USACE). The positions were previously expressed in NAD 83 Datum to align with U.S. Hydrographic Office(s) paper charts. The 2021 Light List Volumes will contain the adjusted positions.  No chart or Light List corrections will be published in the Local Notice to Mariners.

If you have any questions, visit our Contact Us page and, for quicker routing, use the pull-down menu to choose "Navigation" as the subject of your question.