Short Citation:
Office for Coastal Management, 2019: COLREGS Demarcation Lines for the United States, https://inport.nmfs.noaa.gov/inport/item/56121.

Item Identification

Title: COLREGS Demarcation Lines for the United States
Status: Completed
Publication Date: 2019-05-16
Abstract:

U.S. collision regulation boundaries are lines of demarcation delineating 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. Creation of features was interpreted from descriptions published in the Code of Federal Regulations Title 33, Part 80.

Purpose:

To support coastal and ocean planning and other activities pursuant to the Energy Policy Act, Coastal Zone Management Act, Magnuson-Stevens Fishery Conservation and Management Act, National Environmental Policy Act, Rivers and Harbors Act and the Submerged Lands Act.

Supplemental Information:

The native coordinate system for this layer is NAD 1983 (ESPG: 4269). Please note: all MarineCadastre.gov data served by the NOAA Office for Coastal Management and hosted through Esri REST services are in the WGS 1984 Web Mercator Auxiliary Sphere (EPSG: 3857) projection.

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords Earth Science > Human Dimensions > Environmental Governance/Management
ISO 19115 Topic Category boundaries
ISO 19115 Topic Category inlandWaters
ISO 19115 Topic Category oceans
ISO 19115 Topic Category transportation
None COLREGS
None COLREGS Demarcation Lines
None Marine Boundaries
None marine transportation

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States Of America
None Alabama
None Alaska
None California
None Delaware
None Florida
None Georgia
None Guam
None Hawaii
None Louisiana
None Maine
None Massachusetts
None Mississippi
None National
None New Jersey
None New York
None North Carolina
None Oregon
None Palmyra Atoll
None Puerto Rico
None Rhode Island
None South Carolina
None Texas
None United States
None Virginia
None Wake Island
None Washington

Physical Location

City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Distribution Liability:

NOAA makes no warranties or representations whatsoever regarding the availability, quality, accuracy, content, completeness or suitability for the user's needs of such information. The services, information, and data made available on the Marine Cadastre web site are provided "as is" without warranties of any kind. These data are intended for coastal and ocean use planning. Not for navigation. https://www.marinecadastre.gov/about/disclaimer.html

Data Set Credit: ORIGINATORS: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM); NOAA's Ocean Service, Office for Coastal Management (OCM);

Support Roles

Data Steward

CC ID: 836660
Date Effective From: 2019-05
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Metadata Contact

CC ID: 836662
Date Effective From: 2019-05
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Point of Contact

CC ID: 836661
Date Effective From: 2019-05
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Extents

Currentness Reference: Publication Date

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 836665
W° Bound: -178.110405
E° Bound: 166.634428
N° Bound: 71.182005
S° Bound: -14.295391

Extent Group 1 / Time Frame 1

CC ID: 836664
Time Frame Type: Discrete
Start: 2019-05-16
Description:

publication date

Access Information

Security Class: Unclassified
Data Use Constraints:

NOAA makes no warranties or representations whatsoever regarding the availability, quality, accuracy, content, completeness or suitability for the user's needs of such information. The services, information, and data made available on the Marine Cadastre web site are provided "as is" without warranties of any kind. These data are intended for coastal and ocean use planning. Not for navigation. https://www.marinecadastre.gov/about/disclaimer.html

Distribution Information

Distribution 1

CC ID: 836668
Download URL: ftp://ftp.coast.noaa.gov/pub/MSP/COLREGSDemarcationLines.zip
Description:

Data access URL

Distribution 2

CC ID: 836667
Download URL: https://coast.noaa.gov/arcgis/rest/services/MarineCadastre/NavigationAndMarineTransportation/MapServer/
Description:

Data access URL

Distribution 3

CC ID: 836669
Download URL: https://marinecadastre.gov/data/
Description:

Data access URL

Distribution 4

CC ID: 836666
Download URL: https://www.coast.noaa.gov/
Description:

Data access URL

URLs

URL 1

CC ID: 836657
URL: https://marinecadastre.gov/data
Name: MarineCadastre.gov Data Registry
URL Type:
Online Resource
Description:

More information and online data visualization.

URL 2

CC ID: 836658
URL: https://marinecadastre.gov/nationalviewer
Name: MarineCadastre.gov National Viewer
URL Type:
Online Resource
Description:

More information and online data visualization.

URL 3

CC ID: 836659
URL: https://coast.noaa.gov/digitalcoast/data
Name: Digital Coast Data section
URL Type:
Online Resource
Description:

More information and online data visualization.

Data Quality

Accuracy:

The attributes in this dataset are believed to be accurate.

Horizontal Positional Accuracy:

Maximum scale of intended use is 1:80,000.

Completeness Report:

Spatial and attribute properties are believed to be complete, although attribute information has been simplified. Geometric thresholds from original data are preserved. No tests have been completed for exhaustiveness.

Conceptual Consistency:

These data are believed to be logically consistent. Geometry is topologically clean.

Lineage

Sources

COLREGS Demarcation Lines

CC ID: 836650
Contact Role Type: Publisher
Contact Type: Organization
Contact Name: NOAA Office of Coast Survey
Extent Type: Discrete
Extent Start Date/Time: 2018-07-01
Citation URL: https://seamlessrnc.nauticalcharts.noaa.gov/arcgis/rest/services/RNC/NOAA_RNC/MapServer
Citation URL Name: Source Online Linkage
Citation URL Description:

URL where the source data were originally accessed.

Source Contribution:

Data from CFR and RNC were used to compile this dataset.

Process Steps

Process Step 1

CC ID: 836654
Description:

• 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

Process Date/Time: 2010-01-01 00:00:00

Process Step 2

CC ID: 836651
Description:

• 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

Process Date/Time: 2012-01-01 00:00:00

Process Step 3

CC ID: 836653
Description:

• 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

Process Date/Time: 2014-07-01 00:00:00

Process Step 4

CC ID: 836655
Description:

• 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

Process Date/Time: 2015-04-01 00:00:00

Process Step 5

CC ID: 836652
Description:

• 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

Process Date/Time: 2019-02-01 00:00:00

Child Items

Rubric scores updated every 15m

Type Title
Entity (ENT) COLREGS Demarcation Lines

Catalog Details

Catalog Item ID: 56121
Metadata Record Created By: Anna Verrill
Metadata Record Created: 2019-04-25 11:47+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2019-07-02 15:17+0000
Metadata Record Published: 2019-04-25
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2020-04-25