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[camay2327]

This is really hard to believe.  WOW - That would be faster than flying.

 

Supersonic subs look to cross the Pacific in under two hours

The distance between Shanghai and San Francisco is around 6,135 miles (9,873 km), and a team of scientists aims to make that trip possible in 100 minutes. Researchers at Harbin Institute of Technology's Complex Flow and Heat Transfer Lab have developed new tech that allows submarines to traveling a crazy-high speeds beneath the water. The solution? Create an air "bubble" of sorts that leverages supercavitation, a technology applied to torpedoes, to reduce drag caused by water while in route. Theoretically, this means that the vehicles could reach the speed of sound underwater (around 5,800km/h or 3,694 MPH while submerged), reducing the travel time between the aforementioned cities to under two hours.

 

// go to below website for the rest //

 

http://www.engadget....d=rss_truncated

 

[Darth Lefty]

 It's still pretty draggy compared to air at 35000ft. You'd need nuclear power to cross an ocean with it. It makes me wonder what the news story is here; if you take out the journalist's stupid trick of taking the distance between two cities and dividing it by supercavitation speed, all you are left with is "laboratory studies supercavitation" and that's been happening for about 50 years now.

 

Supervavitating torpedoes have existed for a long time but they are very short range weapons compared to conventional ones of the same size.

http://en.wikipedia....i/VA-111_Shkval