Dubai-based British billionaire missing from a submersible examining the Titanic debris is an award-winning explorer who has flown into space and visited the planet's deepest underwater trenches.

He was joined by British businessman Hamish Harding ... place on the voyage. A space on the Titan costed $250,000 (£197,000) ...

LONDON, June 19. /TASS/. UK billionaire Hamish Harding, owner of Action Aviation is aboard the OceanGate Expeditions bathyscaphe that went missing during a submersion to the Titanic wreckage ...