Originally Posted by night0wl
From the announcement:
NOAA announces end of traditional paper nautical charts
NOAA will also announce a new product full-scale PDF (Portable Digital Format) nautical charts, available for free download on a trial basis online.
This is after they reference raster and enc charts.
This is a new service they are offering. The charts were not previously available as PDFs, you used to need special software to read their electronic charts.
It also says "For the three-month trial period, NOAA is providing about a thousand high-resolution printable nautical charts—almost the entire NOAA suite of charts—as PDF files. The PDF nautical charts, which are exact images of the traditional charts currently printed by lithography, will be available for free download on October 22. Coast Survey will then evaluate usage and user feedback to decide whether to continue the service."
So this is an additional service that NOAA is providing, and may continue to provide if it works out.