PICTURED: Titan mothership returns to shore in Newfoundland

The support ship that launched the doomed Titan submersible has returned to port in Canada, following the sub’s catastrophic implosion during a dive to the Titanic wreckage.

The Polar Prince arrived in St John’s Harbor, Newfoundland, on Saturday morning, docking at about 8.15am local time as sun broke through the morning haze.

Crew members in orange hard hats were seen on the deck of the vessel, which returned to port with five fewer souls aboard than the 24 it departed with eight days earlier. 

The ship had taken part in a massive search effort for the Titan about 435 miles south of St John’s, which came to an end on Thursday with the confirmation the sub had imploded deep underwater, likely soon after it launched on Sunday. 

The wind down of recovery efforts comes as the Transportation Safety Board of Canada (TSB) announced it would be conducting a safety investigation into the fatal implosion of the deep sea vessel. 

The support ship that launched the doomed Titan submersible has returned to port in Canada , following the sub’s catastrophic implosion that killed all five men aboard

The Polar Prince, the main support ship for the Titan submersible, arrives at the Port of St. John's in Newfoundland, Canada on Saturday

The Polar Prince, the main support ship for the Titan submersible, arrives at the Port of St. John’s in Newfoundland, Canada on Saturday

The Polar Prince is a decommissioned Canadian Coast Guard icebreaker now owned by Miawpukek Horizon Maritime Service Ltd, and chartered by extreme tourism company OceanGate as a support vessel for the Titan’s fatal dive. 

OceanGate founder and CEO Stockton Rush was killed aboard the company’s submersible, along with passengers Shahzada Dawood and his son Suleman Dawood, British adventurer Hamish Harding, and Titanic expert Paul-Henri Nargeolet. 

Two Canadian Coast Guard (CCG) vessels that took part in the search effort also returned to St John’s harbor on Friday evening, with one remaining on site at the scene of the disaster.

A crowd gathered to watch the return of the CCGS Terry Fox and CCGS Ann Harvey, while the CCGS John Cabot remained on site provide assistance and support to the recovery and salvage operations.  

In a statement issued before their ships arrived at the port, the CCG said: ‘The Canadian Coast Guard offers our sincere condolences to the family and friends of the crew of the Titan for their tragic loss.

‘Search and rescue operations have concluded.’

The Titan submersible (above) catastrophically imploded during a dive to the Titanic's wreckage on the Atlantic seafloor, killing the pilot and four paying passengers

The Titan submersible (above) catastrophically imploded during a dive to the Titanic’s wreckage on the Atlantic seafloor, killing the pilot and four paying passengers

The Polar Prince, the main support ship for the Titan submersible, arrives at the Port of St. John's in Newfoundland, Canada on Saturday morning

The Polar Prince, the main support ship for the Titan submersible, arrives at the Port of St. John’s in Newfoundland, Canada on Saturday morning

Crew members in orange hard hats were seen on the deck of the vessel, which returned to port with five fewer souls aboard than the 24 it departed with eight days earlier

Crew members in orange hard hats were seen on the deck of the vessel, which returned to port with five fewer souls aboard than the 24 it departed with eight days earlier 

Police officers are seen onboard the Polar Prince after its return to the Port of St. John's

Police officers are seen onboard the Polar Prince after its return to the Port of St. John’s

The Polar Prince launched the Titan sub on Sunday, and participated in the search for the OceanGate Expeditions submersible after it disappeared

The Polar Prince launched the Titan sub on Sunday, and participated in the search for the OceanGate Expeditions submersible after it disappeared

Now authorities from the US and Canada have begun the process of investigating the cause of the Titan’s fatal implosion.

The US Coast Guard said on Friday that a formal inquiry has not yet been launched, because maritime agencies are still busy searching the area where the vessel was destroyed. 

Debris was located about 12,500 feet underwater, several hundred feet away from the Titanic wreckage it was on its way to explore.

The US Coast Guard led the initial search and rescue mission, which was a massive international effort that likely cost millions of dollars.

Meanwhile, Canada’s TSB said a team of investigators had been deployed to St John’s in Canada to ‘gather information, conduct interviews and assess the occurrence’.

In a short statement confirming the investigation, the safety body said: ‘The TSB is launching an investigation into the fatal occurrence involving the Canadian-flagged vessel Polar Prince and the privately operated submersible Titan.

‘In accordance with the Canadian Transportation Accident Investigation and Safety Board Act and international agreements, the TSB… will conduct a safety investigation regarding the circumstances of this operation conducted by the Canadian-flagged vessel Polar Prince.

‘A team of TSB investigators is travelling to St John’s, Newfoundland and Labrador to gather information, conduct interviews and assess the occurrence.

‘In the coming days, we will co-ordinate our activities with other agencies involved.’

The TSB will not determine civil or criminal liability and conducts investigations for ‘the advancement of transportation safety’.

Developing story, more to follow. 

***
Read more at DailyMail.co.uk