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EM304 Water Column Sonar Data Collected During EX2401

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: April 12, 2026 at 08:37 PM | Dataset Last Updated: August 21, 2025 at 12:00 AM
From April 13 - May 4, 2024 (San Francisco, California to Honolulu, Hawai’i), NOAA Ocean Exploration conducted the 2024 Mapping Shakedown + High Seas Mapping expedition to test and calibrate the acoustic mapping and associated systems aboard the NOAAS Okeanos Explorer following a drydock period over the winter or 2023/2024. The primary focus of this expedition was to ensure readiness of all sensors and equipment for the 2024 field season. Shakedown and readiness operations included calibrations of the POS MV and Seapath positioning and attitude systems, geometric calibration of the EM304 MKII multibeam echosounder, multibeam swath accuracy assessment at expected operational depths for this field season, speed-noise tests, and calibrations of each of the EK60/80 split beam sonars.

Resources

6 resources available

  • Water Column Sonar Data Map Viewer

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  • AWS Cloud Storage Bucket

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  • Water Column Sonar Data Archive Homepage

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  • GCMD Keyword Forum Page

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  • International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)

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  • NCEI Contact Information

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