gov.noaa.nmfs.inport:79425 eng UTF8 gov.noaa.nmfs.inport:39979 dataset Mixed Office of Coast Survey resourceProvider Robertson, Evan (757) 317-0781 evan.j.robertson@noaa.gov https://nauticalcharts.noaa.gov/ WWW:LINK-1.0-http--link Office of Coast Survey Home Page Website listed for Robertson, Evan information pointOfContact 2026-05-08T15:12:20 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) Marine Critical Minerals MCM 2026 creation 2026 publication NOAA/NMFS/EDM 79425 NOAA NCEI https://doi.org/10.25921/qh2z-7261 https://www.fisheries.noaa.gov/inport/item/79425 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information https://nauticalcharts.noaa.gov/data/hydrographic-survey-data.html WWW:LINK-1.0-http--link Office of Coast Survey - Hydrographic Survey Data Coast Survey hydrographic surveys webpage. download https://oceanservice.noaa.gov/deep-seabed-mineral-resources/mapping.html WWW:LINK-1.0-http--link Mapping the Seafloor for Critical Mineral Resources NOS webpage for critical marine resources. download The data were created by NOAA/HSD. Publication Date Range is 2026 through present. This dataset collection is comprised of baseline data for marine critical minerals areas of interest, which the National Oceanic and Atmospheric Administration (NOAA) is collecting through priority projects in US federal waters, in accordance with Executive Order 14285: Unleashing America's Offshore Critical Minerals and Resources. The baseline datasets incorporate a full evaluation of deep sea areas in order to create hydrographic maps, geophysical maps, and characterize seafloor composition. More specifically, the data collected for the baseline datasets will typically include hydrographic and geophysical survey data, photographs, and physical seabed samples. Data may be collected via multiple platforms (survey vessels, autonomous vessels) and from a myriad of instrumentation (multibeam echosounders, sub-bottom profilers, magnetometers, underwater cameras, box cores). The final full datasets will be archived at the National Centers for Environmental Information (NCEI) for long-term preservation. The purpose of this project is to principally support the characterization of the seabed composition specifically to gather a representative sample of the abundance and type of critical minerals and nodules that exist within the project area. This work directly supports the goals and priorities as laid out in Executive Order 14285, "Unleashing America's Offshore Critical Minerals and Resources". The baseline data obtained from this project will be utilized to inform the United States Geological Survey (USGS), Bureau of Ocean Energy Management (BOEM), NOAA, and other federal agencies and the public as to the potential critical mineral deposits and relative prospectivity of the target area. NOAA/OCS/HSD underDevelopment Robertson, Evan (757) 317-0781 evan.j.robertson@noaa.gov https://nauticalcharts.noaa.gov/ WWW:LINK-1.0-http--link Office of Coast Survey Home Page Website listed for Robertson, Evan information custodian continual EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY > COASTAL BATHYMETRY EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > SUB-BOTTOM PROFILE EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH EARTH SCIENCE > OCEANS > HYDROGRAPHY EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENT COMPOSITION theme Global Change Master Directory (GCMD) Science Keywords 23.3 CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA place Global Change Master Directory (GCMD) Location Keywords 23.3 ECHO SOUNDERS > ECHO SOUNDERS instrument Global Change Master Directory (GCMD) Instrument Keywords 23.3 bathymetry/topography theme NOS Data Explorer Topic Category bathymetry charting coastline depth hydrographic data hydrography morphology navigation surveys ocean seafloor topography sonar soundings water depth theme United States coastal waters place DOC/NOAA/NOS/OCS > Office of Coast Survey, National Ocean Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 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). 2025. GCMD Keywords, Version 22. 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 NOS Hydrographic Surveys Collection project InPort otherRestrictions Cite As: Office of Coast Survey, [Date of Access]: Marine Critical Minerals [Data Date Range], https://www.fisheries.noaa.gov/inport/item/79425. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. license These data were produced by NOAA and are not subject to copyright protection in the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0). otherRestrictions Access Constraints: Restrictions, if any, are dictated by the Coast Survey Sensitive Data Handling Policy (https://drive.google.com/file/d/1bKT2HxDGzuVjMC32--JGRKFPlSnfIe9j/view?usp=sharing). otherRestrictions Use Constraints: The data in this dataset has undergone only a preliminary review. Accordingly, any data in this dataset is not approved for navigation, and is labeled as such. Users assume all risks associated with the use of this preliminary data. Once the bathymetric data has undergone the traditional, full review, NOAA will release the data in support of official, approved navigation product updates. otherRestrictions Distribution Liability: This data is not for navigational purposes. While every effort has been made to ensure that this data is accurate and reliable, NOAA assumes no liability for any damage caused by any errors or omissions in the data. unclassified Raw Data: OCS will make all Raw (unqualified) data available upon receipt via the NOAA Open Data Dissemination (NODD) Program. Restrictions, if any, are dictated by the OCS Sensitive Data Handling Policy (https://drive.google.com/file/d/1bKT2HxDGzuVjMC32--JGRKFPlSnfIe9j/view?usp=sharing). Data will be made available at NCEI for data types NCEI accepts. Additional data access mechanisms may be utilized. QA/QC Data: Any restrictions on sharing are governed by the OCS Sensitive Data Handling Policy. Final Data: Locally stored Final Data are only accessible by OCS employees. Publicly archived data sharing restrictions are governed by the OCS Sensitive Data Handling Policy. Marine Trackline Geophysical Database 1939 publication GMAGD https://doi.org/doi:10.7289/V5CZ35DR NOAA National Centers for Environmental Information custodian crossReference NOS Hydrographic Surveys 2012 publication HSMDB https://doi.org/10.25921/qh2z-7261 NOAA National Centers for Environmental Information custodian crossReference eng; US elevation oceans 144 -62 -15 74 | Currentness: Publication Date 2026 This dataset was collected based on the folliwing statutory authorities: Executive Order 14285, "Unleashing America's Offshore Critical Minerals and Resources." Seabed Mining and the Deep Seabed Hard Mineral Resources Act (DSHMRA) 33 U.S. Code Chapter 47 Ocean Exploration false eng false Appendix 2. Metadata Attribution Guide (page 81) https://nauticalcharts.noaa.gov/publications/documents/HSSD_2026-0-01.pdf WWW:LINK-1.0-http--link Entity Attribute Detail URL Entity Attribute Detail URL information PDF file for descriptive report. Web Service (Other) Web Service (Other) WMS - Web Map Service Office of Coast Survey 1315 East West Highway Silver Spring MD 20910 https://www.nauticalcharts.noaa.gov/ WWW:LINK-1.0-http--link Office of Coast Survey Website Website listed for Office of Coast Survey information distributor https://www.ncei.noaa.gov/products/nos-hydrographic-survey WWW:LINK-1.0-http--link Hydrographic Survey Data Products Hydrographic Survey data: as collected and processed, as well as derived products download https://www.ncei.noaa.gov/maps/bathymetry WWW:LINK-1.0-http--link Bathymetric Data Viewer The Bathymetric Data Viewer is an interactive map providing discovery for bathymetric survey data and digital elevation models archived at NOAA's National Centers for Environmental Information (NCEI). download https://console.cloud.google.com/storage/browser/noaa-deep-sea-minerals WWW:LINK-1.0-http--link Deep Sea Minerals (DSM) Datasets on NODD All data available upon receipt via the NOAA Open Data Dissemination (NODD) Program. Restrictions, if any, are dictated by the Coast Survey Sensitive Data Handling Policy. The data in this dataset has undergone only a preliminary review. Accordingly, any data in this dataset is not approved for navigation, and is labeled as such. Users assume all risks associated with the use of this preliminary data. Once the bathymetric data has undergone the traditional, full review, NOAA will release the data in support of official, approved navigation product updates. download https://noaa.maps.arcgis.com/home/item.html?id=dbd382c4ef5a4464a0a29dfcefda8d43 WWW:LINK-1.0-http--link NOAA NOS Hydrographic Survey Data WMS A hosted feature service showing the location and coverage derived from NOAA's National Ocean Service (NOS), Office of Coast Survey Hydrographic Surveys in U.S. waters and non-hydrographic surveys acquired external to Coast Survey, that have been assessed by Coast Survey for use in NOAA's navigational products and the National Bathymetry. download dataset Horizontal Positional Accuracy Horizontal positional accuracy varies by survey dataset. Review the metadata associated with each dataset for specifics. The earliest technique, using resection and sextants, was common for large-scale surveys (1:5000) until the 1970s. This technique measured angles between onboard sextants and three onshore objects with known positions. This method was limited to line-of-sight, though buoys extended the range offshore with a resulting decrease in accuracy. Positional accuracies typically ranged from 5 to 10 meters. The precursor to modern electronic techniques, Radio-Acoustic-Ranging, was developed in 1924 and used until the early 1940s. This technique determined a vessel's position up to 200 miles offshore by measuring the time difference between a TNT explosion and the received radio transmission from fixed hydrophones. Electronic Positioning Systems like Shoran, EPI, and Raydist became popular starting in the mid-1940s and were widely used until the mid-1990s. Positional accuracy for these systems typically ranged from 10 to 20 meters, though improved land-based systems later achieved accuracies less than 10 meters. Surveys occurring since 1990 utilize Global Positioning System (GPS) in differential mode (DGPS), which became the standard for most inshore surveys. Typical accuracies for DGPS derived positions are +/- 5 meters. Vertical Positional Accuracy Vertical positional accuracy varies by survey dataset. Review the metadata associated with each dataset for specifics. Early lead line depth accuracy was limited by the influence of line stretch, currents, bottom types and other unknown correction factors. While accuracy is typically sufficient for shallow depths, its precision degrades significantly with depth. Singlebeam fathometer vertical accuracy is a variable percentage of depth, and requires numerous corrections for equipment, ship motion, sound speed, heading error, and time delay. Post-1970 multibeam sonar significantly improved vertical accuracy and processing specificity. In concert with modern ancillary sensors (sound speed profilers, inertial motion units) and precision calibrations, depths are typically recorded on the order of centimeters. The accuracy of these measurements rely heavily on the same corrections as singlebeam fathometers and report vertical precision for high-resolution systems in shallow water as low as +/- 2 centimeters. Generally, the number is commonly reported as 10 to 20 centimeters. Completeness Report Many areas portrayed on nautical charts have never been adequately surveyed for modern shipping needs. More than 50% of the areas covered by these charts are based on lead line soundings acquired prior to 1940. Additionally, until the 1990s, the spacing between sounding lines may have been too wide to discover all features on the seafloor including wrecks and other obstructions. Modern surveys using multibeam and side scan sonar increase the chances of locating all such features but due to equipment and resource limitations, there can be no guarantee that all have been found in an area. In areas of critical navigational importance (entrances to ports, heavily traveled nearshore sea lanes, etc.) the most rigorous survey techniques are used, decreasing the chance of missing important seafloor features, but not eliminating that possibility. Conceptual Consistency Historically, various editions of the Hydrographic Manual (published in 1931, 1942, 1960, 1976, 2009) provided guidance for accuracy and resolution. Current standards are set forth in the NOS Hydrographic Surveys Specifications and Deliverables (updated annually). All measured depths have been corrected for water level relative to chart datum, dynamic vessel draft including settlement and squat, and sound speed variations. HSD has traditionally been the organization that acquired the bulk of the hydrographic survey data. Beginning in 1834 hydrographic data was collected by a fleet of survey ships in deep water operations supplemented inshore by field parties. Since the late 1990's many surveys have been by contractors. Through the years this process of data capture has been supplemented by other government agencies like the Corps of Engineers in channel dredging and the United States Coast Guard in Notice to Mariner publications warning of navigation dangers. Private citizens can also contribute data by sending correspondence depicting wrecks, obstructions or shoals. Robertson, Evan (757) 317-0781 evan.j.robertson@noaa.gov processor Hydrographic data collected by the field units are processed to the standards set forth in Office of Coast Survey's Hydrographic Survey Specifications and Deliverables (HSSD). Robertson, Evan (757) 317-0781 evan.j.robertson@noaa.gov processor Hydrographic Surveys Specifications and Deliverables (HSSD) 2024-01-01 publication Office of Coast Survey https://nauticalcharts.noaa.gov/publications/standards-and-requirements.html WWW:LINK-1.0-http--link Hydrographic Surveys Specifications and Deliverables (HSSD) PDF The Hydrographic Surveys Specifications and Deliverables (HSSD) contains the technical specifications for hydrographic survey data submitted to the Office of Coast Survey. It represents NOAA's implementation of the International Hydrographic Organization (IHO) standards for hydrographic survey and product specifications. The HSSD is available in PDF format, via online viewer and as a portable HTML (download file, unzip, and double-click index.htm). Please note that the HSSD is updated as needed. A new version is put out each calendar year but small updates can occur throughout the year. information publisher 1967