Missing Titanic submersible . OceanGate Expeditions charges guests $250,000 (£195,270) for a place on its eight-day expedition to see the wreck of the Titanic.
The site is about 600km (370 miles) off the coast of Canada's Newfoundland, and lies in two parts, with the bow and the stern separated by about 800m (2,600ft).
A huge debris field surrounds the broken vessel.
A full dive to the wreck, including the descent and ascent, reportedly takes eight hours and each trip is meant to include a scientific objective, including studying the wreck's decay.
The inaugural dive took place in 2021, according to the company's website.