Find out about NOAA’s vector electronic navigational charts.
Find out about NOAA's Paper Nautical Charts.
Download free sailing directions or buy a paper copy from a NOAA certified publisher.
Find out about NOAA’s raster navigational charts.
Find out about free full-size images of nautical charts.
Find out about free page-size images of NOAA nautical charts.
Download free images of maps and charts dating back to 1807.
View a seamless display of all NOAA electronic navigational charts using ECDIS symbology.
View a seamless display of all NOAA raster navigational charts using traditional paper chart symbology.
Find, view, and download individual raster NOAA nautical chart products using the NOAA nautical chart catalog and chart viewer.
Access real-time coastal observations, forecasts and warnings.
Get the guide to the symbols, abbreviations and terms used on NOAA nautical charts and ENCs.
View and download regional NOAA nautical charts.
Find out what has changed on NOAA nautical charts and ENCs since the last new edition.
We are the nation’s nautical chart-maker. We are responsible for upgrading charts, surveying the seafloor, responding to maritime emergencies, and searching for underwater obstructions that pose a danger to navigation.
What’s the difference between an ENC and an RNC?
The NOAA Office of Coast Survey (OCS produces two kinds of digital charts; Raster Navigation Charts (RNC’s) and Electronic Navigational Charts (NOAA ENC).
A Raster Navigational Charts is an accurate digital image comprised of pixels, displayed on an electronic screen. Each pixel has a unique color or it has no color. The pattern of the colored and the empty pixels gives shape to the individual features of the chart. The better understand the nature of raster charts, we examine the process that creates them.