Welcome to Singleton Marine Singleton Marine is a top-ranked boat dealer selling new boats and used boats. Headquartered on Lake Lanier in Buford, GA (just north of Atlanta) Singleton Marine serves the Georgia, Alabama, South Carolina, and surrounding markets. Singleton Marine opened in 1988 and has built a reputation for delivering a world-class boat buying and ownership experience. Singleton Marine has been awarded: #1 Cobalt Boats Worldwide Dealer #1 Regal Boats Worldwide Dealer #1 Harris Worldwide Dealer #1 Malibu and Axis Southeast Dealer Boating Industry Magazine’s #1 North American Dealer