The air supply on the missing Titanic tourist submarine is down to its last hours, as rescue workers continue their increasingly desperate search for the five stranded passengers.
A US Coast Guard spokesperson told The Independent they expect the vessel, named Titan, will run out of oxygen at 1pm UK time on Thursday. This estimated time is based on the number of hours of oxygen the craft had for the five people on board - 96 - and the time it submerged - 1pm UK time on Sunday.
