JOIN US SEARCH LOCATIONS CONTACT DEA HOME WHO WE ARE WHAT WE DO SOLUTIONS NEWS MARINE SERVICES :: MARINE DESIGN AND CONSTRUCTION SUPPORT Consistent, precise, and accurate data are vital to the success of any project, but critical for projects being constructed in marine environments. DEA frequently conducts surveys in support of the permitting, environmental impact studies, design, construction and post-construction inspection phases of marine projects in offshore, near-shore, and inland waters. Services for marine design and construction are customized to address project objectives and may include: Desktop studies of existing data Data integration and meshing of existing and newly acquired data Vessel traffic studies High-resolution multibeam seafloor mapping Side scan sonar seafloor imaging Sub-bottom profiling to map soft sediments Seismic reflection profiling to map geologic units Magnetic and inducted tone tracking surveys to locate pipelines, cables, or wrecks Tide and current studies Sediment sampling Acoustic monitoring during pile driving Underwater positioning and monitoring during construction Geospatial services for mapping and modeling 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