Starting in 2007 ASA added several "Endorsement" courses to our certification program. We refer to these courses as "Endorsements" for two reasons. Unlike most ASA courses that cover a spectrum of subjects necessary to operate a sailboat under various conditions, endorsements provide in-depth study of a single topic such as radar, weather, docking or basic celestial navigation. Second, while these classes complement the keelboat sequence courses such as Basic Keelboat, Basic Coastal Cruising, Bareboat Cruising and the other more advanced levels, they are not requirements for the 101 through 108 sequence. Check with your local school for Endorsement availability.