Titan: The submersible | Special report

After five frantic days of searching, "major pieces" of the Titan have been found near the Titanic wreck - with all five men who were on board the submersible presumed dead.

The US Coast Guard said the breakthrough was made by a remotely-operated vehicle (ROV) which had been scouring the ocean floor.

The deep-sea robot, which was sent below the waves by Canadian vessel Horizon Arctic, made the initial discovery on Thursday morning when it spotted the "tail cone" from the rear tip of the submersible.