MidCoast Performance Marine, located on eastern Long Islands south shore, is a full service marina fulfilling the needs of the weekend pleasure boater, professional offshore racer, and everyone in between. We are an authorized Mercury Engines and Mercury Racing High Performance dealer, but we dont just service these engines and drive systems - we race them too. Our factory trained technicians have the experience and knowledge to keep your boat finely tuned, no matter what your boating needs are.