Titanic tourist submarine goes missing - in pictures

The Cyclops 1 submersible operated by OceanGates. A vessel of the same kind went missing during a dive to the wreck of the RMS Titanic in the Atlantic. David L Ryan / The Boston Globe
The Cyclops 1 submersible operated by OceanGates. A vessel of the same kind went missing during a dive to the wreck of the RMS Titanic in the Atlantic. David L Ryan / The Boston Globe
Crews aboard the OceanGate Expeditions' submersibles can stay below the surface for days, provided they have enough oxygen. Photo: OceanGate
Crews aboard the OceanGate Expeditions' submersibles can stay below the surface for days, provided they have enough oxygen. Photo: OceanGate
The bow of the RMS Titanic pictured 4,000 metres beneath the surface of the Atlantic. AFP / Woods Hole Oceanographic Institution
The bow of the RMS Titanic pictured 4,000 metres beneath the surface of the Atlantic. AFP / Woods Hole Oceanographic Institution
Explorer Hamish Harding, who has lived in Dubai for 30 years, is one of several crew on board the missing submersible. Photo: Instagram
Explorer Hamish Harding, who has lived in Dubai for 30 years, is one of several crew on board the missing submersible. Photo: Instagram