NOAA Electronic Navigational Charts

ISO-19139 Metadata

Metadata Information

Metadata character set: utf8

Last update:

Metadata contact:

Scope of the data described by the metadata: dataset

Scope name: dataset

Name of the metadata standard used: ISO 19139 Geographic Information - Metadata - Implementation Specification

Version of the metadata standard: 2007

Metadata identifier: 476e19910cbe4d8d81871c84f6994887

Data Identification Information

Resource citation:

Title: NOAA Electronic Navigational Charts

Date:

Reference date - creation: 2024-03-26T20:30:30

Date:

Reference date - revision: 2025-03-13T17:14:30

Descriptive keywords:

Keyword type not provided

Keywords: Transportation Water, HIFLD Open, HIFLD Open - Transportation Water, NOAA, ENC

Abstract: Two ENC display services provide simple HTTP interfaces for user applications to request geo-registered nautical chart images from NOAA databases for display in online and offline applications for which a basemap of nautical chart data is desired, including GIS, web-based, and mobile mapping applications. The chart images are rendered from the latest NOAA electronic navigational chart (NOAA ENC®) data. The ENC data and the chart images derived from it are updated weekly. Each display service portrays the ENC data with a different symbology set. The ECDIS Display Service uses symbology developed by the International Hydrographic Organization (IHO) for the display of ENC data on Electronic Chart Display and Information Systems (ECDIS) that large ocean- going vessels and many smaller commercial ships use for navigation. This symbol set is commonly referred to by its IHO specification number, "S-52," or as "ECDIS symbology." The ENC Viewer portrays ENC data using this ECDIS symbology. ECDIS Display Service ECDIS Display Service rendering of ENC along the Columbia River with symbology specified by the IHO. https://www.nauticalcharts.noaa.gov/data/gis-data-and-services.html#enc-display-services

Purpose: Nautical chart features contained within a NOAA ENC provide a detailed representation of the U.S. coastal and marine environment. The data, updated weekly, is organized using S-57 object classes. Features in a single NOAA ENC are limited in that they only represent the geographic region that is depicted in that particular NOAA ENC cell. By aggregating nautical features from all NOAA ENC in the creation of GIS data, a continuous depiction of the U.S. coastal and marine environment is achieved.

Dataset language:

Dataset character set: utf8

Resource constraints:

General constraints:

Limitations of use: None (Public Domain)

Resource extent:

Credits: National Oceanic & Atmospheric Administration (NOAA)

Distribution Information

Distribution format:

Format name: WMS

Format version:

Transfer options:

Online distribution information:

Online location: https://gis.charttools.noaa.gov/arcgis/rest/services/MCS/ENCOnline/MapServer/exts/MaritimeChartService/WMSServer