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Short Citation:
Office of Coast Survey, 2022: NOAA Electronic Navigational Charts (ENC), https://www.fisheries.noaa.gov/inport/item/39976.

Item Identification

Title: NOAA Electronic Navigational Charts (ENC)
Short Name: enc_metadata_2007
Status: In Work
Publication Date: 2001
Abstract:

The Office of Coast Survey (OCS) has been involved in the development of a NOAA Electronic Navigational Chart (NOAA ENC) suite to support the marine transportation infrastructure and coastal management for a number of years. The NOAA ENC will support all types of marine navigation by providing the official database for electronic charting systems (ECS), including the Electronic Chart Display and Information System (ECDIS). NOAA ENCs support real-time navigation as well as collision and grounding avoidance needs of the mariner, and accommodate a real-time tide and current display capability that is essential for large vessel navigation. NOAA ENCs will also provide fully integrated vector base maps for use in geographic information systems (GIS) that are used for coastal management or other purposes. The NOAA ENCs are in the International Hydrographic Office (IHO) S-57 international exchange format and comply with the ENC Product Specification.

Purpose:

The electronic navigational charts (NOAA ENC) are primarily intended to support the navigation of vessels in the territorial waters of the United States. The data contained in the NOAA ENCs may also be used for any other coastal mapping purposes that require up-to-date information similar to that portrayed on traditional navigational charts.

Notes:

1530

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
ISO 19115 Topic Category oceans
ISO 19115 Topic Category transportation
NGDA Portfolio Themes National Geospatial Data Asset
NGDA Portfolio Themes NGDA
NGDA Portfolio Themes Water Oceans and Coasts Theme
NOS Data Explorer Topic Category Nautical Charting
Tri - Service Spatial Data Standard Boundaries
Tri - Service Spatial Data Standard Environment/Hazard
Tri - Service Spatial Data Standard Hydrography
Tri - Service Spatial Data Standard Landform
Tri - Service Spatial Data Standard Marine Navigation
Tri - Service Spatial Data Standard Oceans
Tri - Service Spatial Data Standard Transportation
Tri - Service Spatial Data Standard Wildlife/Fisheries

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None U.S. Exclusive Economic Zone
None U.S. territories
None U.S. waters

Physical Location

Organization: Office of Coast Survey
City: Silver Spring
State/Province: MD

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Data Presentation Form: map
Entity Attribute Overview:

The electronic navigational chart conforms to the International Hydrographic Organization Transfer Standard for Digital Hydrographic Data, Special Publication S-57, ENC Product Specification Edition 2.0. The entity and attribute descriptions are contained in the standard. The standard is available from the IHO at http://www.iho.shom.fr.

Entity Attribute Detail Citation:

IHO S-57, Edition 3.1

Distribution Liability:

None

Support Roles

Data Steward

CC ID: 808916
Date Effective From: 2018-12-14
Date Effective To:
Contact (Person): Keown, Patrick
Address: 1315 East West Hwy
Silver Spring, MD 20910-3282
Email Address: patrick.keown@noaa.gov
Phone: 240-533-0031

Distributor

CC ID: 808917
Date Effective From: 2018-12-14
Date Effective To:
Contact (Organization): Office of Coast Survey (OCS)
Address: 1315 East West Highway
Silver Spring, MD 20910
URL: https://www.nauticalcharts.noaa.gov/

Metadata Contact

CC ID: 808918
Date Effective From: 2018-12-14
Date Effective To:
Contact (Person): Keown, Patrick
Address: 1315 East West Hwy
Silver Spring, MD 20910-3282
Email Address: patrick.keown@noaa.gov
Phone: 240-533-0031

Point of Contact

CC ID: 808919
Date Effective From: 2018-12-14
Date Effective To:
Contact (Person): Keown, Patrick
Address: 1315 East West Hwy
Silver Spring, MD 20910-3282
Email Address: patrick.keown@noaa.gov
Phone: 240-533-0031

Extents

Currentness Reference: Publication Date

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 494359
W° Bound: -170
E° Bound: -64
N° Bound: 62
S° Bound: 19

Extent Group 1 / Time Frame 1

CC ID: 494358
Time Frame Type: Continuing
Start: 2001-07-11

Access Information

Security Class: Unclassified
Data Access Constraints:

The NOAA electronic navigational chart (NOAA ENC) files that may be downloaded from the National Oceanic and Atmospheric Administration (NOAA) are official products. Official ENCs are suitable for navigation under the following regulations and policies, and in the following circumstances:On May 2, 2001, the United States Coast Guard amended the chart carriage regulations to permit government vessels to use electronic charting and navigation systems in lieu of paper charts.On August 15, 2002, the United States Coast Guard issued a statement of policy to bring its regulations into agreement with SOLAS Chapter V (as amended by the changes taking effect July 1, 2002). The policy statement said that, if a ship has an approved ECDIS installed according to SOLAS, Chapter V, the ECDIS will be considered as meeting the ship's nautical chart carriage regulations. The ships that are affected are:U.S.-flagged ships of 150 or more gross tons that engage on international voyages.U.S.-flagged ships certificated solely for service on the Great Lakes and the St. Lawrence River.Foreign-flag ships to which SOLAS, Chapter V, applies that are operating on the navigable waters of the United States.This policy is not applicable to U.S.-flag ships engaged only on domestic voyages. These ships must continue to comply with existing navigation equipment requirements until the chart carriage regulations are formally amended.The NOAA ENC files available from this site are updated for Notices to Mariners on at least a monthly basis. Users are encouraged to check the site frequently and download the latest versions of the files. Notice to mariner updates are either contained in a new edition ENC or an incremental update (also called ENC Revision or "ER" files).

Data Use Constraints:

The NOAA electronic navigational chart (NOAA ENC) files that may be downloaded from the National Oceanic and Atmospheric Administration (NOAA) are official products. Official ENCs are suitable for navigation under the following regulations and policies, and in the following circumstances:On May 2, 2001, the United States Coast Guard amended the chart carriage regulations to permit government vessels to use electronic charting and navigation systems in lieu of paper charts.On August 15, 2002, the United States Coast Guard issued a statement of policy to bring its regulations into agreement with SOLAS Chapter V (as amended by the changes taking effect July 1, 2002). The policy statement said that, if a ship has an approved ECDIS installed according to SOLAS, Chapter V, the ECDIS will be considered as meeting the ship's nautical chart carriage regulations. The ships that are affected are:U.S.-flagged ships of 150 or more gross tons that engage on international voyages.U.S.-flagged ships certificated solely for service on the Great Lakes and the St. Lawrence River.Foreign-flag ships to which SOLAS, Chapter V, applies that are operating on the navigable waters of the United States.This policy is not applicable to U.S.-flag ships engaged only on domestic voyages. These ships must continue to comply with existing navigation equipment requirements until the chart carriage regulations are formally amended.The NOAA ENC files available from this site are updated for Notices to Mariners on at least a monthly basis. Users are encouraged to check the site frequently and download the latest versions of the files. Notice to mariner updates are either contained in a new edition ENC or an incremental update (also called ENC Revision or "ER" files).Copying, reproduction of the NOAA ENCs to any other server or location for further reproduction or redistribution is discouraged unless the following guidelines are followed: 1) the NOAA ENCs and supplementary files including the CATALOG.031 and README.TXT are included in their entirety, 2) this disclaimer is displayed to and accepted by anyone who accesses the NOAA ENCs, and 3) a reference to this Web site is included so that anyone accessing the NOAA ENCs is advised of where they originated. If these NOAA ENCs are incorporated into any other product in a form other than as provided by NOAA, the producer of that product assumes full liability and must adhere to conditions 2 and 3 described in the paragraph above concerning copying or reproduction. The National Oceanic and Atmospheric Administration (NOAA) have promulgated certification requirements with standards for applicants who want to redistribute NOAA Electronic Navigational Charts (NOAA ENCs) as official data. Two types of certification are offered. The first type, "Certified NOAA ENC Distributor" (CED), covers NOAA ENC downloading, exact copying, and redistribution of those copies. The second type, "Certified NOAA ENC Value Added Distributor" (CEVAD), permits reformatting official NOAA ENCs into a System Electronic Navigational Chart (SENC) using type-approved software, and distribution of that SENC. NOAA intends by this action to assure that, though redistributed, quality official NOAA ENC data is offered to the public in support of safe navigation on U.S. waters. This rule can be found in the 15 CFR Part 995. A list of approved certified distributors can be found at http://nauticalcharts.noaa.gov/MCD/enc/certdist.htm.

Distribution Information

Distribution 1

CC ID: 494360
Download URL: http://www.charts.noaa.gov/InteractiveCatalog/nrnc.shtml
Distributor: Office of Coast Survey (OCS) (2018-12-14 - Present)
Description:

Downloadable Data

File Type: DX90
File Size: 2
Application Version: 3.1
Compression: Zip

Distribution 2

CC ID: 494361
Download URL: http://www.nauticalcharts.noaa.gov/ENCOnline/enconline.html
Distributor: Office of Coast Survey (OCS) (2018-12-14 - Present)
Description:

Downloadable Data

File Type: DX90
File Size: 2
Application Version: 3.1
Compression: Zip

URLs

URL 1

CC ID: 494352
URL: http://nauticalcharts.noaa.gov/mcd/enc/download_agreement.htm
URL Type:
Online Resource
Description:

URL for download agreement.

Activity Log

Activity Log 1

CC ID: 494380
Activity Date/Time: 2016-12-13
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 494379
Activity Date/Time: 2017-04-05
Description:

Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 718989
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Data Quality

Accuracy:

The NOAA ENC conforms to the International Hydrographic Organization Transfer Standard for Digital Hydrographic Data, Special Publication S-57, ENC Product Specification Edition 2.0. The entity and attribute descriptions are contained in the standard. The standard is available from the IHO at http://www.iho.shom.fr.

Horizontal Positional Accuracy:

The NOAA ENC conforms to the International Hydrographic Organization Transfer Standard for Digital Hydrographic Data, Special Publication S-57, ENC Product Specification Edition 2.0.

Vertical Positional Accuracy:

The NOAA ENC conforms to the International Hydrographic Organization Transfer Standard for Digital Hydrographic Data, Special Publication S-57, ENC Product Specification Edition 2.0.

Completeness Report:

The NOAA ENC contains most of the features currently shown on the corresponding paper chart. The detailed road networks and depictions of buildings in urban areas have been replaced with an "urban area" that is displayed as a tinted area with the associated place name.NOAA ENCs are currently available for the United States 40 major commercial port areas and transit between those ports. As of October 2007 there are currently 608 NOAA ENC's available. This comprises 97% coverage of United States commercial waterways and transit routes.

Conceptual Consistency:

The NOAA ENC conforms to the International Hydrographic Organization Transfer Standard for Digital Hydrographic Data, Special Publication S-57, ENC Product Specification Edition 2.0.

Lineage

Process Steps

Process Step 1

CC ID: 494350
Description:

The NOAA ENC database has been built from a combination of charted information as well as original "source" information. NOAA has compiled critical features such as channel limits, aids to navigation, and obstructions from the original documents that were used to put the feature on the paper chart. The objective is to use the most accurate information for features that are critical to the safety of navigation. NOAA uses a number of sources in compiling NOAA ENCS including U.S. Army Corps of Engineers surveys, drawings, and permits, U.S. Coast Guard Local Notices to Mariner, National Geospatial-Intelligence Agency Notices to Mariners, NOAA hydrographic surveys, and the largest scale paper chart of an area. All NOAA ENCs that are considered "completed" are up to date for the current Notices to Mariners. They will also have any new chart information included within a few weeks of the information's arrival at NOAA.

Catalog Details

Catalog Item ID: 39976
GUID: gov.noaa.nmfs.inport:39976
Metadata Record Created By: Tyler Christensen
Metadata Record Created: 2017-04-05 13:49+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2018-12-14
Owner Org: OCS
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2018-12-14
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2019-12-14