A fixture on the southern end of Boston Harbor, 3A Marine Service has been getting Massachusetts boaters out on the water for over 50 years. We are known and respected for our straightforward advice and timely, professional service. Whether a recreational boater, a water-based commercial operation, or a public safety agency, all of our customers know they can trust us to maximize their time on the water. We cover the South Shore, Boston, North Shore, Cape Cod, and the Greater Boston area. We are authorized dealers for Robalo, Parker, and Four Winns boats, and for Evinrude, Yamaha, and Tohatsu outboards. We are also sell Tidewater trailers. We deliver professional-grade service, delivered by our factory-certified technicians.