The world's largest ship was a floating hotel - Apparently.
The SS Atrato, a passenger liner turned hotel, held the Guinness World Record for the largest ship in the world from 1961 to 1963. It was 1,031 feet 9 inches (314.5 meters) long and 95 feet 2 inches (29 meters) wide, with a gross tonnage of over 26,000 tons. The ship was built in 1937 and served as a floating hotel in the Caribbean, hosting celebrities and dignitaries.