Those who step foot on board the Titanic submersible are warned there is a 'great danger' they'll be 'cut in half' before setting off.
Channel 5 were broadcasting its documentary after it was confirmed the debris field found earlier near the wreck of the ancient ship has been confirmed as belonging to the missing Titan submersible, with all five passengers declared dead.
Before the heartbreaking announcement, Dan Walker spoke to expert Martin Phillips, who has previously undertook a similar trip.
