gov.noaa.ncei:H14235_EM304 eng; USA utf8 series Series NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact 2026-07-17 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) curve 1385 World Geodetic System 1984 WGS 84 2007-08-27 revision https://epsg.org/crs_4326/WGS-84.html WGS 84 GML of World Geodetic System 1984 coordinate reference system. information resourceProvider European Petroleum Survey Group https://epsg.org/home.html European Petroleum Survey Group Geodetic Parameter Registry Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations. search publisher urn:ogc:def:crs:EPSG::4326 Vertical Datum: Unknown Vertical Datum: Unknown EM304 Water Column Sonar Data Collected During H14235 2026-02-11 creation 2026-07-17 publication NOAA National Centers for Environmental Information H14235_EM304 International DOI Foundation (IDF) doi:10.25921/nwa9-z870 NOAA National Centers for Environmental Information NCEI Metadata ID:H14235_EM304 NOAA National Centers for Environmental Information custodian NOAA National Centers for Environmental Information publisher Ryan Cross Woolpert USA principalInvestigator Woolpert author This dataset was collected during NOAA Hydrographic Survey H14235, 115 NM east of Guam. The data acquired include the standard suite of NOAA Office of Coast Survey hydrographic data and products as well as water column sonar data. The data were acquired abaord the Saildrone SD3002. The purpose of this project will be to close bathymetry gaps in U.S. and international waters in support of the National Ocean Mapping, Exploration and Characterization (NOMEC) strategy, Seabed 2030, and safe navigation. The data from this project will also enhance predictive capabilities for sensitive marine habitats, marine geohazards, oceanographic conditions, seafloor composition, and marine resources as well as ground truth remotely sensed data to feed into next generation models. The collection of high-quality data will support effective place-based management of marine resources and ecosystems, sustainable energy development, and will improve taxonomic characterization of undescribed organisms to build reference libraries. By optimizing resources to improve understanding of both our ocean and other ocean worlds through support of innovative technology testing and implementation, this project will ensure the reusability of the data collected, and will help leverage collaborative opportunities. completed NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA National Centers for Environmental Information Water Column Sonar Data Manager (303) 497-4742 325 Broadway, Mail Code E/NE42 Boulder CO 80305-3328 USA wcd.info@noaa.gov pointOfContact notPlanned Earth Science > Oceans > Ocean Acoustics > Acoustic Scattering Earth Science > Oceans > Aquatic Sciences > Fisheries Earth Science > Oceans > Ocean Acoustics Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Pelagic Earth Science > Biosphere > Ecosystems > Marine Ecosystems Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Benthic Earth Science > Biosphere > Ecosystems > Aquatic Ecosystems Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian North Pacific Ocean place International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23) 2010-08-24 revision International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23) https://iho.int/ International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23) Publication of Sea Areas is maintained by IHO. information resourceProvider DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Vertical Location > Water Column place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > WCMS > Water Column Mapping System instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian otherRestrictions Cite as: Woolpert. 2026. EM304 Water Column Sonar Data Collected During H14235. NOAA National Centers for Environmental Information. https://doi.org/10.25921/nwa9-z870 [access date] otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose These data are considered raw and have not been subjected to the NOAA's quality control or quality assurance procedures. They are released for limited public use as preliminary data to be used only with appropriate caution. NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. Not subject to copyright protection within the United States. otherRestrictions Resource may not be available for up to one year after initial collection. H14235 largerWorkCitation operation S-T375-KR-25 largerWorkCitation program eng; USA oceans geoscientificInformation 148.29873 144.39579 11.60222 13.40829 2026-02-11T00:00:00 2026-05-19T11:59:59 Trackline physicalMeasurement NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor Free Contact the NCEI Water Column Sonar Data Manager to order data. EM304 1 Kongsberg EM304 .wcd or .kmwcd files. See the EM304 documentation for detailed format specification. https://www.ncei.noaa.gov/maps/water-column-sonar/index.html?surveys=H14235&instruments=EM304 HTTPS Water Column Sonar Data Map Viewer Interactive map viewer to allow discovery and access to water column sonar data search https://registry.opendata.aws/ncei-wcsd-archive/ HTTPS AWS Cloud Storage Bucket AWS Cloud Storage to provide additional public access to water column sonar data through the NOAA Open Data Dissemination project (NODD) download https://www.ngdc.noaa.gov/mgg/wcd/ HTTPS Water Column Sonar Data Archive Homepage Web page containing information on the water column sonar data archive. information collectionHardware Instrument calibration information Unknown series Horizontal Positional Accuracy Positional accuracy dependent on navigation GPS, ship motion correction, and sound velocity profile accuracy. true Vertical Positional Accuracy Vertical accuracy is dependent on navigation GPS and ship motion corrections. true Raw unprocessed data files 2026-02-11T00:00:00 Ryan Cross Woolpert USA principalInvestigator Kongsberg EM302 Multibeam Echosounder EM302 Kongsberg Maritime +47 214 98 364 +47 322 85 014 P.O. Box 483 NO-3601 Kongsberg Norway km.support@kongsberg.com https://www.kongsberg.com/globalassets/kongsberg-maritime/km-products/product-documents/data-sheet---echosounder-multibeam-em-302/ Kongsberg EM302 Multibeam Echosounder Kongsberg EM302 Multibeam Echosounder information information resourceProvider Kongsberg EM302 Multibeam Echosounder The state of the art 30 kHz EM 302 deep water multibeam sonar is manufactured by Kongsberg, Inc of Norway. The EM 302 transducers are modular linear arrays in a Mills cross configuration with separate units for transmit and receive. This sonar offers significantly larger swath width, increased data density and resolution. Beam focusing is applied both during reception and transmission. The system has up to 288 beams / 432 soundings per swath with pointing angles automatically adjusted according to achievable coverage or operator defined limits. In multi-ping mode, 2 swaths are generated per ping cycle, with up to 864 soundings. With multi-ping the transmit fan is duplicated and transmitted with a small difference in along track tilt. The applied tilt takes into account depth, coverage and vessel speed to give a constant sounding separation along track. The beam spacing can be adjusted as equi-distant or equi-angular. EM 302 uses both CW pulses and FM sweep pulses with pulse compression on reception, in order to increase the maximum useful swath width. The transmit fan is split in several individual sectors with independent active steering according to accomplish compensation for the vessel movements: yaw, pitch and roll. The high density, high resolution, large coverage and water column capability makes EM 302 an ideal system to explore the sea bed and the water column for detection and characterization of a broad spectrum of features. H14235_EM304 completed Saildrone Surveyor Saildrone Surveyor Saildrone Surveyor uncrewed surface vehicles (USVs) enable the collection of high-quality ocean data for a wide variety of applications. Saildrone 1050 West Tower Avenue Alameda CA 94501 USA https://www.saildrone.com/ Saildrone Saildrone is a collector of ocean related in situ data via uncrewed vehicle, above and below the sea surface. information pointOfContact Simrad EK80 Echosounder EK80 Simrad - Kongsberg Maritime AS https://www.kongsberg.com/discovery/ocean-science/ek-family/ek80/ Simrad Ek80 information web page Page contains general information on the Ek80 and has links to details on operation and file formats information resourceProvider Simrad EK80 echosounder The Simrad EK80 is the most modern "high end" split beam scientific echo sounder in the fishery scientific market. Based on more than 60 years of research and development in close collaboration with leading marine scientists this wide band echo sounder system has succeeded the famous EK60, which became an international standard for fish stock assessment. The Simrad EK80 can operate a large number of frequencies simultaneously ranging from 10 to 500 kHz. A wide selection of high quality accurate transducers is available.