India, May 23 -- Wendy Rush, wife of OceanGate CEO Stockton Rush, was aboard the support vessel Polar Prince when the Titan submersible imploded during its 2023 dive to the Titanic wreck. Monitoring the mission closely, she heard a sudden, sharp pop over the communication system - a sound she later realised marked the instant the vessel catastrophically failed deep beneath the North Atlantic.

"What was that bang?" Wendy asked, still unaware that it was the exact moment the Titan imploded, killing all five people on board.

(Also read: OceanGate CEO, killed in Titan submersible dive, had claimed it was 'safest thing ever')

The US Coast Guard has released footage, obtained by the BBC, revealing the submersible's final communications. Wend...