Conveniently located on Great Sodus Bay, Katlynn Marine features the largest, most well-protected deep water marina on the south shore of Lake Ontario. Their full range of large-vessel marine services, experienced professional staff, and the bay’s finest facilities make Katlynn Marine the premier destination for vacation cruisers, great loopers, and season-long guests alike. Come for a visit, and see why so many boaters call Katlynn Marine their home away from home.