The exchange occurred on June 18, 2023, while the submersible was descending to explore the Titanic wreck site. At around 10:00 a.m., the Polar Prince tried to communicate with the crew. They repeatedly asked whether the sub could see the support vessel on its display.

Despite asking the same question seven times in seven minutes, the Titan’s response was sporadic. At 10:14 a.m., the crew sent a short response: “k,” followed by another short reply to the same question: “Yes.” Moments later, they added, “All good here.”

The communication between the two vessels ended abruptly at 10:47 a.m., and the Titan’s final descent ended in disaster. The submersible imploded, killing all on board. The crew included Stockton Rush and Paul Henri Nargeolet. Hamish Harding, Shahzada Dawood, and his 19-year-old son, Suleman, were also on board.