Cedar Island Marina is full service family-owned business equipped with numerous amenities including: a service department, ship store, fuel dock, pool, jacuzzi, restaurant, laundry services, free internet and lounge for hosting parties and events. At Cedar Island Marina, we provide our customers more than just a dock to tie up to. As the largest marina in Clinton Harbor and one of the largest in Connecticut, we pride ourselves on the fact that we offer our boaters an experience similar to a resort.