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NGS Conducts Geodetic Survey to Support U.S. Coast Guard

Friday September 6, 2019

NGS employees coordinated and conducted a geodetic survey to support the "Aids to Navigation System" units in the U.S. Coast Guard (USCG), establishing a control point at a facility in Crisfield, Maryland. The new local control mark will allow vessels to verify their GPS units when equipment has been changed or accuracy questions arise. Additionally, the new mark is near docking locations, providing better accessibility to local and visiting USCG resources than previous survey mark locations. Once the coordinates are entered into the USCG database, vessels can easily verify their on-board GPS positioning by navigating close to the mark and comparing results produced by their equipment. Additionally, the coordinates of the mark are referenced to the National Spatial Reference System, which is critical for the consistency of all federal mapping applications.

For more information, contact: Ryan Hippenstiel