Survivor of deepest sub rescue in history recalls 84-hour wait at the bottom of seabed off Cork

The Titan has five people on board and is believed to have enough oxygen to last until about 10am on Thursday morning, Irish time.

As rescue teams race against the clock to find the submersible that has gone missing near the wreck site of the Titanic, one man is recalling his own rescue off the coast of Cork 50 years ago.

The rescue of Roger Mallinson and Roger Chapman in 1973 is currently the deepest sub-rescue in history.