Maine State Ferry Service : Rockland, Vinalhaven, Bass Harbor et six autres ports. Casco Bay Lines : Portland (Maine), Peaks Island, Little Diamond Island, Great Diamond Island, Long Island (Maine), Chebeague Island, Diamond Cove et Cliff Island. Downeast Windjammer Cruise Lines : Bar Harbor, Winter Harbor, Great Cranberry Island, Islesford, Northeast Harbor, Southwest Harbor, Eastport et Lubec. Balmy Days Cruises : Boothbay Harbor, Squirrel Island, Monhegan et Burnt Island. Isle au Haut Boat Services : Stonington, Isle au Haut, Duck Harbor et Seal Island. Monhegan Boat Line : Port Clyde, Monhegan et Eastern Egg Rock. Beal & Bunker : Great Cranberry Island, Islesford et Northeast Harbor. Bay Ferries : depuis Yarmouth (Nova Scotia). Et une autre compagnie.