What is Seawise Giant?
{{Orphan|date=February 2022}} [[File:Building and ship comparison to the Pentagon2.svg|thumb|right|The size comparison between the ''Knock Nevis'' (in red) compared to other ships and buildings: {{legend|#69a5ff|[[The Pentagon]], 431 m}} {{legend|#e14cc3|[[RMS Queen Mary 2]], 345&nbsp;m}} {{legend|#ffff4c|[[USS Enterprise (CVN-65)]], 342&nbsp;m}} {{legend|#4ca64c|[[LZ 129 Hindenburg|Hindenburg]], 245&nbsp;m}} {{legend|#4c4ca6|[[Japanese battleship Yamato|''Yamato'']], 263&nbsp;m}} {{legend|#939393|[[Empire State Building]], 443&nbsp;m}} {{legend|#ff4c4c|''Knock Nevis, ex-'''Seawise Giant''', 458&nbsp;m}}]] '''''Seawise Giant''''' (known later as the '''Happy Giant''', '''Jahre Viking''', '''Knock Nevis''', '''Oppama''', and '''Mont''') was a ULCC [[Oil tanker|supertanker]]. It was the longest ship ever built and had the greatest [[deadweight tonnage]] that has ever been recorded.<ref>{{cite web|url=http://maritime-connector.com/worlds-largest-ships/|accessdate=2014-06-04|title=Biggest Ship in the World - Largest Ships|publisher=Maritime Connector|archive-date=2014-06-08|archive-url=https://web.archive.org/web/20140608054927/http://maritime-connector.com/worlds-largest-ships/|url-status=dead}}</ref> When it was heavily loaded, the ship had a [[Displacement (ship)|displacement]] of 657,019 tonnes (646,642 long tons; 724,239 short tons) and had a [[Draft (hull)|draft]] of 24.6&nbsp;m (81&nbsp;ft).<ref>{{cite web|url=http://www.largestships.com/seawise-giant/|accessdate=2014-06-04|title=Seawise Giant – the Biggest Ship ever Built|publisher=Largest Ships in the World}}</ref> Due to it's size and lack of maneuverability, it was not able to move through the [[English Channel]], [[Suez Canal]] or the [[Panama Canal]].<ref>{{cite web|url=http://www.tribuneindia.com/1999/99jul11/sunday/head3.htm|accessdate=2014-06-04|title=The world's biggest ship|work=The Tribune}}</ref> The ship was built in 1979 by [[Sumitomo Heavy Industries]] at the Oppama shipyard in [[Yokosuka, Kanagawa]], [[Japan]].<ref>{{Cite book|title= Tanker