The four Titanic submersible rescue ships this morning returned to port bearing the weight of the loss of five men.
The lead vessel was the MV Polar Prince - the mothership that towed the underwater vehicle into the Atlantic Ocean before its "catastrophic implosion". A team of US and Canadian federal investigators boarded the ship at 8am ET and will now determine how the implosion took place.
A coastguard source told the Sunday Mirror: "None of the crew was allowed to disembark until all had been interviewed by investigators. Both US and Canadian governments are taking the death of the five men extremely seriously and want to know every detail about how they came to die. Canada’s Transportation Safety Board and the US National Transportation Safety Board have both sent investigators to the Polar Prince."
