A massive effort to find a submersible exploring the wreck of the Titanic in the North Atlantic has entered a critical stage. The vessel, named Titan, went missing deep under the ocean on Sunday with five people on board. Researchers aboard the Polar Prince, the mothership on the surface, lost contact with the crew shortly after the Titan began its dive. The situation is becoming urgent as there is limited oxygen on board, and it was estimated that supplies would run out by Thursday morning.

Undersea noises have been detected in the search area, but their origin and significance remain unknown. US, Canadian, and French agencies are collaborating to locate the submersible, and OceanGate, the tour firm responsible, is exploring all available options for a safe recovery. The search area has been expanded, and multiple vessels and ROVs (remotely operated vehicles) have been deployed in the effort.

The situation is critical due to the potential depletion of oxygen, and experts are considering various scenarios while trying to locate the submersible. The Titanic wreck lies at a depth of 3,800m (12,500ft), posing significant challenges for rescue operations. Despite the ongoing search efforts, the fate of the submersible and its crew remains uncertain.