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    • EX2103: 2021 ROV Shakedown (ROV & Mapping)

    Metadata Updated: October 19, 2024

    This Remotely Operated Vehicle (ROV) shakedown expedition aboard NOAA Ship Okeanos Explorer began in Norfolk, Virginia on June 13, 2021 and concluded on June 28, 2021 in Newport, Rhode Island. This was the first time the ROVs Deep Discoverer and Seirios were mobilized and used for ROV dives since the extensive 2021 winter dry dock repair period. While underway, 24‐hour operations focused on preparing remotely operated vehicle (ROV) systems for the remainder of 2021 expeditions. Extensive testing, calibration, and troubleshooting was completed for new ROV motors, motor controllers, cameras, lighting, hydraulic systems, and a navigational sonar during 11 ROV dives. The first five dives progressively got to deeper depths ranging from 670 m to 4370 m with the primary objective of new equipment integration and personnel training. The following five dives were conducted on Caryn Seamount, and the mid-Atlantic canyons Toms, Hudson (twice), and Uchupi. The last dive of the expedition was on a recently discovered sonar anomaly that turned out to be a World War II era submarine, the Humaitá (ex-USS Muskallunge). Five biological and three geological samples were collected for later analyses from Caryn Seamount and the mid-Atlantic canyons. Mapping operations during the expedition included continued calibrating and troubleshooting of the ship's new EM304 multibeam sonar and transducer array. Additional mapping operations included improving multibeam bathymetry in previously mapped areas, sub-bottom sonar surveys conducted on the Currituck landslide feature off of North Carolina, EK60 water column sonar survey of the diurnal migration above Hudson Canyon, and searching for underwater cultural heritage sites by observing sonar depth and backscatter anomalies.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Date July 26, 2021
    Metadata Created Date October 19, 2024
    Metadata Updated Date October 19, 2024
    Reference Date(s) June 13, 2021 (publication)
    Frequency Of Update

    Metadata Source

    Harvested from NCDDC OER

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date July 26, 2021
    Metadata Created Date October 19, 2024
    Metadata Updated Date October 19, 2024
    Reference Date(s) June 13, 2021 (publication)
    Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
    Contact Email
    Guid gov.noaa.ncei:EX2103_SCS
    Access Constraints
    Bbox East Long -67.977
    Bbox North Lat 41.487
    Bbox South Lat 36.29
    Bbox West Long -76.286
    Coupled Resource
    Frequency Of Update
    Harvest Object Id 15607d73-1972-488c-92fb-48975698bac6
    Harvest Source Id 0eb61eac-016f-4f95-a6c3-2974339749bb
    Harvest Source Title NCDDC OER
    Licence Access Constraints: No access constraints Use Constraints: No use constraints.
    Lineage Processing Steps
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-76.286, 36.29], [-67.977, 36.29], [-67.977, 41.487], [-76.286, 41.487], [-76.286, 36.29]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2021-06-13
    Temporal Extent End 2021-06-27

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