Marine Services :: Navigation and Nautical Charting
Our support of navigation and nautical charting is exemplified by our ongoing surveying services to help address the nation’s critical survey backlog for nautical charting. Our current contracts with NOAA Office of Coast Survey include hydrographic services and airborne bathymetric LiDAR, and span almost two decades of service to the nation. DEA’s surveying experience under these contracts includes the performance of multibeam and single-beam hydrographic surveys, and side scan sonar surveys; installation of water level stations; computation of tidal datums; deployment of GPS water level buoys; evaluation of VDatum and ellipsoidally referenced survey (ERS) techniques; extended 24-hour ship operations; and airborne bathymetric LiDAR operations.