Are you looking for ENC data for use in a GIS?
Please check out the NOAA ENC Direct to GIS web portal at http://nauticalcharts.noaa.gov/csdl/ctp/encdirect_new.htm.

NOAA Electronic Navigational Chart

The Office of Coast Survey (OCS) has been involved in the development of a NOAA Electronic Navigational Chart (NOAA ENCŪ) suite to support the marine transportation infrastructure and coastal management for a number of years. The NOAA ENCŪ supports 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 ENCŪs support real-time navigation as well as the 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 ENCŪs 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 ENCŪs are in the International Hydrographic Office (IHO) S-57 international exchange format and comply with the IHO ENC Product Specification, however, there are two different versions of NOAA ENCŪs which are described in further detail here.

We continue to work very hard to produce and maintain these NOAA ENCŪs and are pleased to announce that they are released to the public at no cost.

> Later in the year, NOAA ENCŪ incremental updates will provide automatic NOAA ENCŪ corrections for Notices to Mariners and other changes. In the meantime, all Notice to Mariners corrections are provided to the public by posting corrected versions of the NOAA ENCŪs to the Web site. Please see the Download page for more information.

For technical questions about the NOAA ENCŪ, its format or the standards involved; and for questions related to production scheduling or cartographic content of the NOAA ENCŪs please click Here for NOAA's Nautical Chart Product Inquiry page.

Revised Wednesday September 29 2004by OCS Webmaster