What’s called the “world’s largest privately owned yacht” will visit three Maine ports. The 644-foot ship called The World will tie up at the breakwater pier in Eastport on Tuesday so that the residents who live aboard can visit the seaport. The vessel also will visit Bar Harbor, Rockland and Portland before making its way to Boston. The World is owned by 130 families from 19 countries who occupy 165 private condominium residences. Since 2002, the ship has been continuously circumnavigating the globe, visiting 800 ports in 140 countries. The Bangor Daily News, reports that the ship is the only private residential community at sea and has a crew of 260 from 40 countries, including a golf pro.