--- title: Supersonic Submarines Closer to Reality, Chinese Scientists Say description: There could one day be a high-tech sub that crosses the Pacific Ocean in less time than it takes to watch a movie canonical: https://time.com/3180108/travel-transportation-transport-supercavitation-supersonic-submarine-harbin-institute-of-technology-li-fengchen/ author: Charlie Campbell article:opinion: false article:content_tier: free article:published_time: 2014-08-26T08:04:58.000Z article:modified_time: 2026-02-21T09:51:12.779Z article:section: Science og:title: San Francisco to Shanghai in Two Hours? og:description: Chinese scientists say a highspeed transpacific submarine is a possibility og:url: https://time.com/3180108/travel-transportation-transport-supercavitation-supersonic-submarine-harbin-institute-of-technology-li-fengchen/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltde093bcdab65f2d0/6988d9b9bc6cfc69913e2a3c/time-logo.jpg?branch=production og:image:width: 1200 og:image:height: 675 og:image:alt: TIME og:type: article twitter:card: summary_large_image twitter:title: San Francisco to Shanghai in Two Hours? twitter:description: Chinese scientists say a highspeed transpacific submarine is a possibility twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltde093bcdab65f2d0/6988d9b9bc6cfc69913e2a3c/time-logo.jpg?branch=production --- # Supersonic Submarines Just Took One Step Closer to Reality > Sponsored content. 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There is no cost and no subscription requirement. ### Sources * TIME Newsletters: [time.com/newsletters](/c/time-nl-network-2026q3/newsletters?i=fee230f0-b18c-41f8-b009-888af24a93e0&cr=time-nl-network-2026q3-v1)  by [Charlie Campbell](https://time.com/author/charlie-campbell/)  ## Charlie Campbell Editor at Large Aug 26, 2014 8:04 AM UTC  by [Charlie Campbell](https://time.com/author/charlie-campbell/)  ## Charlie Campbell Editor at Large Aug 26, 2014 8:04 AM UTC Chinese scientists say there could one day be a high-tech submarine that crosses the Pacific Ocean in less time than it takes to watch a movie, the _South China Morning Post_ [reports](http://www.scmp.com/news/china/article/1580226/shanghai-san-francisco-100-minutes-chinese-supersonic-submarine). Researchers at the Harbin Institute of Technology, in northeast China, have made dramatic improvements to a Soviet-era military technology called supercavitation that allows submersibles to travel at high speeds, the _Post_ says. Supercavitation envelops a submerged vessel inside an air bubble to minimize friction. It enabled the Russian Shakval torpedo to reach speeds of 230 m.p.h. — but theoretically, a supercavitated vessel, given sufficient power at launch, could reach the speed of sound (some 3,603 m.p.h.). That would mean crossing the 6,000-odd miles from San Francisco to Shanghai in just two hours. One of the problems of supercavitation has been how to steer a vessel at such speeds. The Harbin scientists say they could have the answer. According to the _Post_, they’ve developed a way of allowing a supercavitated vessel to shower itself with liquid while traveling inside its own air bubble. The liquid creates a membrane on the surface of the vessel, and by manipulating this membrane, the degree of friction applied to different areas of the vessel could be controlled, which would enable steering. “We are very excited by its potential,” said Li Fengchen, professor of fluid machinery and engineering at the Harbin Institute’s complex flow and heat transfer lab. “By combining liquid-membrane technology with supercavitation, we can significantly reduce the launch challenges and make cruising control easier,” he told the _Post_. Li stressed, however, that many technical problems needed to be solved before supersonic submarine travel could take place. \[[_SCMP_](http://www.scmp.com/news/china/article/1580226/shanghai-san-francisco-100-minutes-chinese-supersonic-submarine)\] ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/3180108/travel-transportation-transport-supercavitation-supersonic-submarine-harbin-institute-of-technology-li-fengchen/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/3180108/travel-transportation-transport-supercavitation-supersonic-submarine-harbin-institute-of-technology-li-fengchen/"},"headline":"Supersonic Submarines Just Took One Step Closer to Reality","datePublished":"2014-08-26T08:04:58.000Z","dateModified":"2026-02-21T09:51:12.779Z","description":"That would make San Francisco to Shanghai in two hours a possibility","url":"https://time.com/3180108/travel-transportation-transport-supercavitation-supersonic-submarine-harbin-institute-of-technology-li-fengchen/","keywords":["Physics","Transportation","Innovation","China","San Francisco","Travel","Shanghai"],"thumbnailUrl":"","author":[{"@type":"Person","name":"Charlie Campbell","jobTitle":"Editor at Large","url":"https://time.com/author/charlie-campbell/"}],"articleSection":"Science","image":[],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/science/","name":"Science"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/physics/","name":"Physics"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/3180108/travel-transportation-transport-supercavitation-supersonic-submarine-harbin-institute-of-technology-li-fengchen/","name":"Supersonic Submarines Just Took One Step Closer to Reality"}}]}] ```