Between 1974 and 1979, Sumitomo Heavy Industries in Yokosuka, Kanagawa Prefecture, Japan, built an oil tanker that became the longest self-propelled ship ever constructed. The vessel, known as the Seawise Giant, stretched 458.45 meters in length—longer than the Empire State Building is tall. It had a draft of 24.611 meters, meaning it sat nearly 25 meters deep in the water, and a width of nearly 68.6 meters, more than twice that of the Titanic. It was also the heaviest ship ever built, with a full load displacement of 657,019 tonnes, allowing it to carry about 4.1 million barrels of crude oil. The Seawise Giant underwent seven name changes during its long career. Originally ordered by a Greek shipowner who later withdrew, the ship was acquired and expanded by Hong Kong businessman C.Y. Tung, who increased its capacity to over 600,000 tonnes. It was then named Seawise Giant and registered under its flag. However, its operational life was cut short on May 14, 1988, when it was attacked by Iraqi air forces during the Iran-Iraq War. Iraqi aircraft launched French-made Exocet missiles at the ship, which was anchored off the Iranian island of Larak. The resulting fire spread through the crude oil tanks, and the vessel eventually sank in the shallow waters of Brunei Bay. Its insurers and the then-owner, the Hong Kong company OOCL, declared it a total constructive loss and abandoned it. Following the end of the Gulf War, a consortium led by Norman International purchased the wreck and transported it to Singapore for a complete reconstruction. Over 3,700 tons of new steel were used to repair the ship, restoring its seaworthiness. It was renamed Happy Giant and returned to service in October 1991. The ship continued to change hands and names over the years. In 1998, it was purchased by Norwegian shipowner Jørgen Jahre for $30 million and renamed Jahre Viking. It operated for another decade with a reduced crew of 40 people and was retrofitted with powerful MAN-B&W diesel engines and a massive 9-meter diameter propeller. In 2004, the ship was acquired by First Olsen Tankers and renamed Knock Nevis, where it served as a fixed storage unit on the Al Shaheen oil field in Qatar for five years. In 2009, it was sold to a shipbreaking yard in Gujarat, India, and renamed Mont for its final journey. The ship was dismantled over the course of a year at the Alang shipyard, where 18,000 workers were employed. Today, the only remaining part of the supertanker is its 36-ton anchor, displayed at the Hong Kong Maritime Museum. In 2013, its length was surpassed by Shell’s Prelude FLNG, a floating liquefied natural gas installation measuring 488 meters.