Maine State Ferry Service: Rockland, Vinalhaven, Bass Harbor e altri sei porti. Casco Bay Lines: Portland (Maine), Peaks Island, Little Diamond Island, Great Diamond Island, Long Island (Maine), Chebeague Island, Diamond Cove e Cliff Island. Downeast Windjammer Cruise Lines: Bar Harbor, Winter Harbor, Great Cranberry Island, Islesford, Northeast Harbor, Southwest Harbor, Eastport e Lubec. Balmy Days Cruises: Boothbay Harbor, Squirrel Island, Monhegan e Burnt Island. Isle au Haut Boat Services: Stonington, Isle au Haut, Duck Harbor e Seal Island. Monhegan Boat Line: Port Clyde, Monhegan e Eastern Egg Rock. Beal & Bunker: Great Cranberry Island, Islesford e Northeast Harbor. Bay Ferries — partenze: Yarmouth (Nova Scotia). E un’altra compagnia.