The Secrets of the TitanicSeptember 1, 1985. The RMS Titanic, which has been missing since April 15, 1912, is found in the North Atlantic where it lies at a depth of 3,821 metres. Paul Henri Nargeolet, a commander in the French Navy, directed underwater research of part of many expeditions to the wreck, from 1987 until his untimely death in 2023. With hundreds of hours of diving to the liner and more than five thousand objects brought to the surface, including bottles of