Polar Prince: Support ship docks at Canadian harbour as rescue operations wind down

In losing Titan, St John's mulls a familiar tragedy

Titanic sub search: What happens next

Titanic sub search: US Navy detected implosion-like sounds days ago

Missing Titanic submersible: The health risks facing the crew

Missing Titanic sub search team expand search area as oxygen fears mount

Explorer's harrowing experience of being trapped at Titanic stern in 2000

Titanic tourist submersible: Huge effort to find vessel as air supply dwindles

St John's ready to help in search for missing Titanic sub

Titan sub has heated walls, private toilet and games console controller

Titanic tourist submersible: Rescuers scan ocean as clock ticks

Titanic tourist submersible: My trip aboard the sub