RIVIERA BEACH, Fla. - Visual aids are a large part of the Coast Guard Auxiliary boating safety course, used to teach recreational mariners the basics about nautical navigation. The course, held in Palm Beach Shores, Fla., Sep. 16, 2012, is designed to teach boaters the basics about boat handling and safety. Coast Guard Photo by Petty Officer 1st Class Krystyna A. Hannum