The haunting return to the Titanic: Expedition to the wreck sets sail just one year after the OceanGate tragedy which saw five killed while trying to visit the lost ship - as experts reassure 'we aren't using manned submersibles this time around'

Adventurers set sail for the wreck of the Titanic on Friday – marking the first expedition since the doomed OceanGate mission over a year ago that tragically killed five men. The Georgia-based firm that owns the salvage rights to Titanic, called RMS Titanic Inc, is probing the sunken ocean liner using two remotely operated vehicles (ROVs). According to the BBC, the robotic vehicles will reach 12,000ft (3,700 metres) down – the bottom of the North Atlantic, where the remains of the Titanic lie. They will capture millions of high-resolution photos to make a new 3D model of the debris, which is quickly deteriorating and could be lost in a few decades. A plaque will also be laid on the seabed in honour of Frenchman Paul-Henri Nargeolet, director of research at RMS Titanic Inc, who was one of the five Titan victims.