June 16, 2023, 8:30 a.m.: The five participants were sealed into Titan.
9:14 a.m.: Titan began its free fall. Usually Titan would have stayed near the surface for a communications check, but this time did not.
9:18 a.m.: Titan, at about 165 ft, sent the message "k" as a communications check.
9:28 a.m.: Titan confirmed the vessel was descending at a rate of 33m per minute.
9:53 a.m.: Communication was lost for about 15 minutes, prompting the surface ship, Polar Prince, to repeatedly send: “Do you see Polar Prince on your display?”
10:08 a.m.: Titan sent the message "k." Titan resumed sending messages about its position.
10:11:18 a.m.: Titan messaged that it could see the surface ship on its display, "all good here."
10:47:02 a.m.: Titan sent a message that it "dropped two wts," indicating it dropped ballast weights to slow its descent.
10:47:08 a.m.: Titan sent an automated transmission recording its final location, 3,346.28m deep.
10:47:09 a.m.: Titan imploded.
10:47:11 a.m.: Surface ship tracking team heard felt a shudder and heard a "bang."