The thing is barely big enough for the 5 people inside it - it pretty much IS an escape pod.
Just seen it , really doesn't look like it should be used to do this
CBS journalist David Pogue was invited to travel on OceanGate's Titan submersible on a press trip last year, to reach the wreckage of the Titanic.
He told the BBC that passengers were sealed inside the main capsule by several bolts that were applied from the outside and had to be removed by an external crew.
He said he initially thought the sub seemed improvised: "You steer this sub with an Xbox game controller, some of the ballast is abandoned construction pipes."
If the sub became trapped or sprung a leak "there's no backup, there's no escape pod", he said.