He's visited the wreck more than 30 times in the last 25 years. P.H. Nargeolet gives us his personal observations about the wreck and how Titanic might have gone down.

The prevailing theory has always been that Titanic sideswiped the iceberg creating a 300 ft gash along her side. Famed Titanic Explorer, P.H. Nargeolet, discovered five scratches down her side.

Called Titanic's "Greatest Explorer," PH Nargeolet takes us deep inside the wreck for a revealing look at Titanic's interior.

Titanic Channel host and famed Titanic Explorer P.H. Nargeolet takes us back down to the wreck for a look at Titanic's changing conditions and deterioration.

Have you ever wondered what it would be like to dive two and a half miles below the surface in a small submersible and see Titanic up-close? Well, here's your chance with Titanic's greatest explorer, P.H. Nargeolet.