Three Belles Marina is a full-service marina located on pristine Smith Cove in Niantic, CT. While just a few miles from Interstate 95, our location in the quaint seaside village seems miles away from the hustle and bustle of everyday life. Our protected cove is only minutes from the Long Island Sound and boasts some of the best boating and fishing grounds on the eastern seaboard. We are a certified Clean Marina since 2010. We invite you to our marina and look for yourself.