gov.noaa.nmfs.inport:56121 eng UTF8 dataset Office for Coastal Management resourceProvider 2026-04-30T00:00:00 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) curve EPSG::4269 COLREGS Demarcation Lines 2019-05-16 publication NOAA/NMFS/EDM 56121 https://www.fisheries.noaa.gov/inport/item/56121 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information mapDigital U.S. collision regulation boundaries delineate those waters upon which mariners shall comply with the International Regulations for Preventing Collisions at Sea, 1972 (72 COLREGS) and those waters upon which mariners shall comply with the Inland Navigation Rules. The waters inland of these lines are subject to the Inland Navigation Rules Act of 1980. The waters outside these lines are subject to the International Navigation Rules of the International Regulations for Preventing Collisions at Sea, 1972 (COLREGS). The Coast Guard has the legal authority to effect regulatory changes to COLREGS. Records in this database are derived from descriptions published in the Code of Federal Regulations Title 33, Part 80 and are for planning purposes only. To support ocean planning activities pursuant to the Executive Order Regarding the Ocean Policy to Advance the Economic, Security, and Environmental Interests of the United States, the Energy Policy Act, the National Environmental Policy Act, the Rivers and Harbors Act, and the Coastal Zone Management Act. U.S. Coast Guard, NOAA Office for Coastal Management, Bureau of Ocean Energy Management completed NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact asNeeded EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL GOVERNANCE/MANAGEMENT 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 coastal planning renewable energy theme Territorial Sea United States of America place DOC/NOAA/NOS/OCM > Office of Coastal Management, 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 MarineCadastre project InPort otherRestrictions Cite As: Office for Coastal Management, [Date of Access]: COLREGS Demarcation Lines [Data Date Range], https://www.fisheries.noaa.gov/inport/item/56121. 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. otherRestrictions Use Constraints: For coastal and ocean planning otherRestrictions Distribution Liability: https://www.marinecadastre.gov/about/disclaimer.html unclassified eng; US boundaries oceans transportation Microsoft Windows, ArcGIS Pro -178.110405 166.634428 -14.295391 71.182005 publication date | Currentness: Publication Date 2019-05-16 Bureau Code: 006:48, Program Code: 006:055 false eng false GIS File COLREGS Demarcation Lines 2019-05-03 publication https://marinecadastre.gov/downloads/data/mc/COLREGSDemarcationLine.zip WWW:LINK-1.0-http--link https://marinecadastre.gov/downloads/data/mc/COLREGSDemarcationLine.zip download https://marinecadastre.gov/data/ WWW:LINK-1.0-http--link https://marinecadastre.gov/data/ Marine Cadastre Data Registry download dataset Accuracy Untested Horizontal Positional Accuracy Compiled to meet 10 meters horizontal accuracy at 95% confidence level Completeness Report Untested Conceptual Consistency These data are logically consistent • Original source data and metadata acquired • Heads up digitize, or coordinate input from original sources • Cross reference between sources • Dissolved unnecessary polyline splits and removed multiparts • On MMS layers dissolved "BDRY_APRV_" • On OC layers dissolved "APPRVDATE" • Populated attribute contents • Validated geometry 2010-01-01T00:00:00 • Create a new map document RNC service http://egisws02.nos.noaa.gov/ArcGIS/services/NOAA_RNC • Add original feature class and scan for features in CollisionRegulationsBoundary feature class which were missing on RNC • Search COLREGS in the CFR to confirm presence in original feature class • Edit identified features, including descriptions and related fields in the attribute table • Use CFR list of up-to-date locations of Collision Regulations to verify their locations in Atlantic, Gulf of Mexico, and Pacific Oceans 2012-01-01T00:00:00 • Create a new map document RNC service http://egisws02.nos.noaa.gov/ArcGIS/services/NOAA_RNC • Add original feature class and scan for features in CollisionRegulationsBoundary feature class which were missing on RNC • Create bookmarks in ArcMap of missing or erroneous features and features whose geometry does not match their RNC counterpart • Check current CFR to confirm presence of features in original feature class and to see if new features need to be added • Edit identified features, including descriptions and related fields in the attribute table 2014-07-01T00:00:00 • Compare original data from MarineCadastre.gov data registry to the 2014 Code of Federal Regulations (CFR) and Raster Navigational Charts (RNC) • Use smallest scale RNC to evaluate features • Add new features from CFR and RNC, and remove old features • Update attribute fields 2015-04-01T00:00:00 • Download new version of CFR from https://www.govinfo.gov/content/pkg/CFR-2018-title33-vol1/pdf/CFR-2018-title33-vol1.pdf • Adjust geometry of updated COLREGS lines later than 07/01/2014 • These include: 80.155, 80.160, 80.165, 80.501, 80.502, 80.712, 80.748, 80.815, 80.1420, 80.1430, 80.1440, 80.1450, 80.1460, 80.1470 • Use RNC map service as a guide to recreate new geometries 2019-02-01T00:00:00 Source Contribution: Geographic coordinates expressed in terms of latitude or longitude 33 CFR Part 80 COLREGS Demarcation Lines 1981-05-26 publication U.S. Coast Guard https://www.ecfr.gov/current/title-33/chapter-I/subchapter-D/part-80 WWW:LINK-1.0-http--link Source Citation URL Source Citation URL information originator 1981 Source Contribution: Raster display of NOAA nautical charts containing COLREGS Demarcation Lines COLREGS Demarcation Lines NOAA Office of Coast Survey https://seamlessrnc.nauticalcharts.noaa.gov/arcgis/rest/services/RNC/NOAA_RNC/MapServer WWW:LINK-1.0-http--link Source Online Linkage URL where the source data were originally accessed. information publisher 2018-07-01