weeks of hunting in a vast stretch of ocean think back to another ill-fated voyage one that ended exactly 102 years ago. the titanic set sail on april in 1912 and cost the modern day equivalent of $4 hundred million. hark stephenson served as the adviser of james camera director of the blockbuster movie titanic . titanic was a well-built ship and obeying the rules at the time. reporter: four days later, the titanic struck an iceberg and fate was sealed. more than 1,500 people perished. for 75 years the luxury liner remained on the sea floor. in 1985, searchers finally