Search Help Show/Hide Menu
Completion Rubric
84%
29.33 / 35
View Report
OCM Metadata Library > MarineCadastre >

COLREGS Demarcation Lines

Data Set (DS)  |  Office for Coastal Management (OCM)
GUID: gov.noaa.nmfs.inport:56121  |  Updated: May 30, 2023  |  Published / External 
Summary
Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Spatial Info
Access Info
Distribution Info
Tech Environment
Data Quality
Lineage
Child Items
Catalog Details

Summary

Short Citation
Office for Coastal Management, 2024: COLREGS Demarcation Lines, https://www.fisheries.noaa.gov/inport/item/56121.
Full Citation Examples

Abstract

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.

Distribution Information

Use Constraints:

For coastal and ocean planning

Controlled Theme Keywords

boundaries, ENVIRONMENTAL GOVERNANCE/MANAGEMENT, oceans, transportation

Child Items

Type Title
Entity COLREGS Demarcation Lines

Contact Information

Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202

Extents

Geographic Area 1

-178.110405° W, 166.634428° E, 71.182005° N, -14.295391° S

Time Frame 1
2019-05-16

publication date

Item Identification

Title: COLREGS Demarcation Lines
Status: Completed
Publication Date: 2019-05-16
Abstract:

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.
Purpose:

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.
Supplemental Information:

Bureau Code: 006:48, Program Code: 006:055

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
oceans
ISO 19115 Topic Category
transportation
UNCONTROLLED
None coastal
None planning
None renewable energy

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
UNCONTROLLED
None Territorial Sea
None United States of America

Physical Location

City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Data Presentation Form: Map (digital)
Entity Attribute Overview:

effectiveDate, state, boundaryIdentifier, instanceCode
Distribution Liability:

https://www.marinecadastre.gov/about/disclaimer.html
Data Set Credit: U.S. Coast Guard, NOAA Office for Coastal Management, Bureau of Ocean Energy Management

Support Roles

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

Spatial Information

Spatial Representation

Vector Representation 1

CC ID: 901080
Complex Object Present?: No
Composite Object Present?: No
Curve Object Present?: Yes
Point Object Present?: No
Solid Object Present?: No
Surface Object Present?: No

Reference Systems

Reference System 1

CC ID: 901081

Coordinate Reference System
CRS Type: Geographic 2D
EPSG Code: EPSG:4269
EPSG Name: NAD83
▾ See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Use Constraints:

For coastal and ocean planning

Distribution Information

Distribution 1

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

MarineCadastre.gov Data Registry

Distribution 2

CC ID: 836668
Download URL: https://marinecadastre.gov/downloads/data/mc/COLREGSDemarcationLine.zip
Distributor:

Technical Environment

Description:

Microsoft Windows, ArcGIS Pro

Data Quality

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

Lineage

Sources

33 CFR Part 80 COLREGS Demarcation Lines

CC ID: 1176861
Contact Role Type: Originator
Contact Type: Organization
Contact Name: U.S. Coast Guard
Publish Date: 1981-05-26
Extent Type: Discrete
Extent Start Date/Time: 1981
Citation URL: https://www.ecfr.gov/current/title-33/chapter-I/subchapter-D/part-80
Source Contribution:

Geographic coordinates expressed in terms of latitude or longitude

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:

Raster display of NOAA nautical charts containing COLREGS Demarcation Lines

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

Rubric Score Type Title
Entity COLREGS Demarcation Lines

Catalog Details

Catalog Item ID: 56121
GUID: gov.noaa.nmfs.inport: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: 2023-05-30 18:09+0000
Metadata Record Published: 2019-04-25
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2019-04-25
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2020-04-25