国家地理:泰坦尼克号最终的秘密

在北大西洋大濑,罗伯巴拉德博士即将得到20世纪最大发现,那就是铁达尼号沉船遗迹.在寻找这艘著名邮轮的幕后,是一则关于匿踪、潜舰与超级强权的间谍故事.故事背景是冷战时期的惊悚历史,铁达尼号作为掩护的公开新闻,这是发现铁达尼号的真实幕后经过.
　　其实主要讲美国核动力潜艇长尾鲨号和天蝎号沉没原因的调查，铁达尼克号反而讲得并不多
　　In 1985, National Geographic Explorer-in-Residence Dr. Robert Ballard solved one of the greatest nautical mysteries of the 20th century when, while on a top secret naval assignment, he found the final resting place of the RMS Titanic. Now, join the legendary explorer as he reveals the details behind this story of stealth, subs and superpowers ripped from the pages of a Cold War spy thriller. Learn how Ballard's search for Titanic became the cover story to ward off Soviet suspicions, and dive to the ocean floor to explore the covert expeditions that gave Ballard the cutting-edge forensic evidence that would lead him straight to Titanic within a matter of days.