A group of undersea explorers return to one of most famous ships in history The team of explorers are working to settle some myths abt ship that many thought was unsinkable before it sank They learns more abt lifeboats, cabin of one of most famous passengers on the ships Benjamin Guggenheim The Titanic is one of the world's greatest tragedies and little by little undersea explorers are piecing together the mystery of what happened This is first manned dive to wreckage of Titanic in 15 years