One of the United States' most advanced nuclear submarines returned to port in Washington state this week flying a Jolly Roger, a move steeped in maritime lore and mystery. The images of the USS Jimmy ...

SAN FRANCISCO, Dec. 5 (UPI) -- With the launch of the holiday season, American engineer, explorer, entrepreneur Graham Hawkes hopes his latest invention -- a winged submersible that soars beneath the ...

The single-seater Virgin Oceanic craft will try to reach the deepest points in each of the world’s five oceans — in what would be the first such feat — starting with the deepest of them all, in the ...

Like Ushakov’s pioneering design, it’s a flying wing on pontoons, full of hollow spaces and a pressure compartment. Thirty-four to 36 feet long with a wingspan of between 90 and 110 feet, the ...

Add articles to your saved list and come back to them any time. British billionaire Richard Branson unveiled plans to pilot a "flying" mini-submarine down to the furthest depths of the oceans, in his ...

NEWPORT BEACH—British billionaire Richard Branson unveiled plans Tuesday to pilot a “flying” mini-submarine down to the furthest depths of the oceans, in his latest record-breaking adventure. The ...