Seawise Giant, later the Happy Giant, Jahre Viking, and Knock Nevis, was a ULCC supertanker and the longest ship ever built, and possessed the greatest deadweight tonnage ever recorded. Fully laden, her displacement was 657,019 tonnes (646,642 LT; 724,239 ST), the heaviest ship of any kind, and with a draft of 24.6 m (81 ft), she was...