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2023 Shakedown + EXPRESS West Coast Exploration

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: December 19, 2025 | Last Modified: 2023-04-13T00:00:00.000+00:00
From April 13-27, 2023 (Portland, Oregon, to Seattle, Washington), NOAA Ocean Exploration conducted the 2023 Shakedown + EXPRESS West Coast Exploration expedition (EX2301), a remotely operated vehicle (ROV) and Mapping expedition to shakedown the ROV, video, telepresence, seafloor mapping, and sampling operations aboard NOAA Ship Okeanos Explorer, as well as explore deep waters off the west coast of the United States. The ROV engineers tested and calibrated ROVs Deep Discoverer and Seirios motor controllers, auto position software, lighting systems, hydraulic systems, stills camera, high-definition ancillary ROV cameras, and sector-scanning sonar. Shakedown and readiness operations for the EM 304 MK II multibeam sonar system included a GNSS Azimuth Measurement Subsystem calibration, two patch tests, and a speed-noise test. Operations during this 15-day expedition included nine successful ROV dives, which were conducted in water depths ranging from 555 m to 3960 m for approximately 45:34 hours of bottom time and resulted in the collection of 92 samples. EX2301 also mapped 12,298 sq. km of seafloor (12,263 in the U.S. Exclusive Economic Zone). Data associated with this expedition have been archived and are publicly available through the NOAA archives.

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Pacific Ocean U.S. West Coast Earth Science > Oceans > Marine Environment Monitoring Earth Science > Oceans > Aquatic Sciences Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography expedition exploration explorer marine education noaa ocean ocean discovery ocean education ocean exploration ocean exploration and research OER ocean literacy ocean research science scientific mission scientific research sea stewardship systematic exploration technology transformational research undersea underwater okeanos explorer okeanos scientific computing system SCS noaa fleet R337 multibeam multibeam sonar telepresence sub-bottom profile mapping survey multibeam backscatter water column backscatter singlebeam sonar single beam sonar single-beam sonar deep-sea exploration high-definition underwater video underwater video exploration vessel bathymetric gaps, benthic habitats, CTD, deep-sea coral and sponge communities, deep-water habitats, EM304, essential fish habitats, EFH, expedition, exploration, explorer, EXPRESS, fish habitats, habitat areas of particular concern, HAPC, Key, mapping survey, marine education, multibeam, multibeam backscatter, multibeam sonar, multi-beam sonar, noaa, noaa fleet, ocean, ocean discovery, ocean education, ocean exploration, ocean exploration and research, ocean literacy, ocean research, oceans, OER, okeanos, okeanos explorer, R337, science, scientific computing system, scientific mission, scientific research, SCS, sea, Seabed 2030, shakedown, single beam sonar, singlebeam sonar, single-beam sonar, site characterization, sonar anomalies, split beam sonar, stewardship, sub-bottom profile, systematic exploration, eDNA, technology, undersea, underwater, water column backscatter Pacific Ocean, North Pacific Ocean, California, Oregon, Washington, U.S. West Coast ROV > Remotely Operated Vehicles Okeanos Explorer > NOAA Ship Okeanos Explorer DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/OAR/OER > Office of Ocean Exploration and Research, Oceanic & Atmospheric Research, NOAA, U.S. Department of Commerce

Complete Metadata

describedByType application/octet-steam
identifier gov.noaa.ncei.oer:EX2301_COLLECTION
issued 2023-04-13T00:00:00.000+00:00
language []
rights otherRestrictions
spatial 120.48,34.54,129.23,49.08

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