The missing Titanic submarine "wasn't signed off by a regulatory body" according to a chilling waiver passengers have to sign before entering the vessel.
Passengers previously on board the OceanGate submersible have revealed how they were asked to sign a waiver which admits the vessel has not been verified by a professional regulatory body.
British billionaire Hamish Harding and UK-based father and son Shahzada Dawood, 48, and his son Sulaiman Dawood, 19, were all on board the submersible which was taking paying tourists to view the Titanic, 370 miles off the coast of Newfoundland, Canada, when the vessel lost contact on Sunday.
