The worse fears of rescue crews were realised yesterday when it emerged the missing Titanic submarine's remains had been discovered after a "catastrophic implosion".
The Titan, which was operated by OceanGate, had five passengers on board the vessel when it disappeared while on a journey to visit the Titanic's wreckage around 435 miles of St John's, Newfoundland, Canada.
A huge search and operation rescue mission was underway to try and find the missing vessel before the oxygen ran out on Thursday morning.