The new HYPACK feature allows U.S.-based users to quickly obtain the most recent charts provided by NOAA and the USACE at no additional charge. U.S.-based users who have an Internet connection will be able to download the charts from the USACE and NOAA web-map servers with the click of a button. Both agencies have made their charts available for download, and HYPACK has made it easy to ensure users have the latest chart data. Step One: Update ENC Catalog: HYPACK downloads the latest chart catalogs over the Internet from the NOAA and USACE map servers.