NOAA ENC Direct to GIS

NOAA's Electronic Navigational Charts (NOAA ENCs) have been developed to support the marine transportation infrastructure and coastal management. The NOAA ENCs are in S-57, a data standard developed by the International Hydrographic Organization (IHO) to be used for the exchange of digital hydrographic data. NOAA ENCs can be used in Geographic Information Systems, (GIS) allowing for broader public access. Many GIS's, however cannot read an ENC's native S-57 format to address this problem. NOAA's ENC Direct to GIS web portal provides comprehensive access to display, query, and download all available large scale NOAA ENC data in a variety of GIS/CAD formats for non-navigational purposes using Internet mapping service technology. Nautical chart features contained within an NOAA ENC provide a detailed representation of the U.S. coastal and marine environment. This data includes coastal topography, bathymetry, landmarks, geographic place names and marine boundaries. Features in an NOAA ENC are limited in that they only represent the geographic region that is depicted in that particular NOAA ENC. By aggregating nautical features from all NOAA ENCs in the creation of GIS data, a contiguous depiction of the U.S coastal and marine environment is achieved.

NOAA ENC Direct to GIS Internet Mapping Service is designed to allow for the visualization, querying and downloading of NOAA's Electronic Navigational Chart's (NOAA ENC) data in common Geographic Information System (GIS) formats.

1527

The ENC data are available in several different Scale Bands. Update: Band categories 4, 5 and 6 are no longer packaged together:

Overview (scale band category 1 = 1:1,500,001 or smaller),

General (scale band category 2 = 1:600,001 - 1:1,500,000),

Coastal (scale band category 3 = 1:150,001 - 1:600,000),

Approach (scale band category 4 = 1:50,001 - 1:150,000)

Harbor (scale band category 5 = 1:5,001 - 50,000),

and Berthing (scale band category 6 = 1:5,000 or larger)

The data are available in either "North American Datum 1927" (Clarke Ellipsoid 1866) or "World Geodetic System 1984" geodetic datums. Object class are listed under Entity Type with each applicable Geometric primitive suffix for point, line and/or area (examples: Built_Up_Area_area and Built_Up_Area_point).

http://www.s-57.com/ IHO S-57 Object Catalog

None

REST URL for KML Services is dependent on resolution scale.; REST URL for WMS is dependent on resolution scale.; REST URL for Geoprocessing Services is dependent on resolution scale.; REST URL for Map Services is dependent on resolution scale.;

None.

NOAA ENC Direct to GIS data is not intended for navigational purposes. This data is provided for use in GIS software packages for coastal planning and research.

The NOAA ENC Direct to GIS data is derived from NOAA ENC's which conforms to the International Hydrographic Organization Transfer Standard for Digital Hydrographic Data, Special Publication S-57, ENC Product Specification Edition 2.0.

The NOAA ENC Direct to GIS data is derived from data that conforms to the International Hydrographic Organization Transfer Standard for Digital Hydrographic Data, Special Publication S-57, ENC Product Specification Edition 2.0.

The NOAA ENC Direct to GIS data is derived from data that conforms to the International Hydrographic Organization Transfer Standard for Digital Hydrographic Data, Special Publication S-57, ENC Product Specification Edition 2.0.

NOAA ENC Direct to GIS data represents current coverage of all published ENC Charts. As new NOAA ENCs and NOAA ENC editions are created they are added to the NOAA ENC Direct to GIS dataset.

The NOAA ENC Direct data is derived from NOAA ENC's which conforms to the International Hydrographic Organization Transfer Standard for Digital Hydrographic Data, Special Publication S-57, ENC Product Specification Edition 2.0. NOAA ENC Direct to GIS data has added generalized nautical chart symbology to aid in the visualazition of this data.