JOIN US SEARCH LOCATIONS CONTACT DEA HOME WHO WE ARE WHAT WE DO SOLUTIONS NEWS MARINE SERVICES :: NAVIGATION AND NAUTICAL CHARTING DEA Marine Services has an extensive history of providing marine surveying and consulting services in support of navigation and nautical charting throughout the continental United States. This work has included nautical charting surveys and consulting services for the National Oceanic and Atmospheric Administration (NOAA), the U.S. Army Corps of Engineers (USACE), Port Authorities, Pilot Associations, and the maritime industry. DEA is integrating port survey and shoreline data into commercial ship pilot navigation software to improve safety of navigation on the Columbia River and is working with charting authorities on hydrographic surveys of remote ports of call for Electronic Navigation Chart production. 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. More Key Contacts :: Related Projects Marine Services Navigation and Nautical Charting Infrastructure Inspection Marine Design and Construction Support Flood Control and Reservoir Capacity Studies Environmental Investigations Marine Geophysical Investigations Geospatial Analysis Mobile Vessel Laser Scanning Hydrographic Surveys Marine Services Projects Who We Are History Core Ideology Leadership Stewardship Locations Contact DEA What We Do Energy Land Development Transportation Water and Environment Surveying and Geomatics Marine Services Solutions Alternative Project Delivery Construction Engineering Energy Development Engineering Landscape Architecture Environmental Planning and Compliance Planning Project Management News Awards Rankings Join Us Our People Current Openings Benefits Subconsultants and Vendors David Evans and Associates, Inc., 2100 S. River Parkway, Suite 100, Portland, OR 97201 :: 800.721.1916 Copyright © 1996-2021 David Evans and Associates, Inc. All rights reserved. :: Terms of Use | Privacy Policy