Editing Newport News Shipbuilding (section)

===Ocean liners===
After World War I NNS completed a major reconditioning and refurbishment of the [[ocean liner]] {{SS|Leviathan}}. Before the war she had been the German liner ''Vaterland'', but the start of hostilities found her laid up in [[New York Harbor]] and she had been seized by the US Government in 1917 and converted into a [[troopship]]. War duty and age meant that all wiring, plumbing, and interior layouts were stripped and redesigned while her hull was strengthened and her boilers converted from coal to oil while being refurbished. Virtually a new ship emerged from NNS in 1923, and SS ''Leviathan'' became the [[flagship]] of [[United States Lines]].{{citation_needed|date=August 2019}}

In 1927 NNS launched the world's first significant [[Turbo-electric transmission|turbo-electric]] ocean liner: [[Panama Pacific Line]]'s {{GRT|17833}} {{SS|California|1928|6}}.<ref name=Time>{{cite news |url=http://cruiselinehistory.com/cruise-line-history-%E2%80%93-panama-pacific-lines-finished-from-1938-time-magazine-2/ |publisher=Michael L Grace |title=Panama Pacific Lines finished |newspaper=[[Time (magazine)|Time]] |date=May 9, 1938 |access-date=May 19, 2013 |url-status=live |archive-url=http://archive.wikiwix.com/cache/20130520141839/http://cruiselinehistory.com/cruise-line-history-%E2%80%93-panama-pacific-lines-finished-from-1938-time-magazine-2/ |archive-date=May 20, 2013 }}</ref> At the time she was also the largest merchant ship yet built in the United States,<ref name=Time/> although she was a modest size compared with the biggest European liners of her era. NNS launched ''California''{{'}}s [[sister ship]]s ''[[SS Brazil (1928)|Virginia]]'' in 1928 and ''[[SS Argentina (1929)|Pennsylvania]]'' in 1929. NNS followed them by launching two even larger turbo-electric liners for [[Dollar Steamship Company]]: the {{GRT|21936}} {{SS|President Hoover}} in 1930, followed by her sister {{SS|President Coolidge||2}} in 1931. {{SS|America|1939|6}} was launched in 1939 and entered service with United States lines shortly before World War II but soon returned to the shipyard for conversion to a troopship, USS ''West Point''.{{citation_needed|date=August 2019}}