Video footage released this week of Wendy Rush — the wife of OceanGate CEO Stockton Rush, who perished in the 2023 Titan sub implosion — features a noise “later correlated with the loss of communications and tracking,” that is now thought to have been the noise of the craft’s implosion reaching the ocean surface, a U.S. Coast Guard spokesperson said in an email to Fox News Digital, echoing the description posted with the video on dvidshub.net.

In the video, after the sound is heard, Wendy Rush seems to ask what it was, apparently still unaware of the tragedy.

The video was released Thursday as part of the USCG’s ongoing Marine Board of Investigation into the incident, the USCG spokesperson noted.

The outlet also reported that she was the great-great-granddaughter of two Titanic passengers who perished in 1912 when the ship sank.