Missing British billionaire adventurer Hamish Harding is among the five people missing in a submarine that lost contact near the wreck of the Titanic.
Hamish, a pilot and three others paid around $250,000 (around £195,000) to see the wreck which lies 12,500ft beneath the surface of the Atlantic Ocean.
The 58-year-old chairman of private plane firm Action Aviation was on the 21ft vessel when it set off for what should have been an eight-hour trip to the bottom of the Atlantic.
