The unsinkable Titanic sank April 15 1912 taking 1,500 of the 2,223 passengers aboard to the bottom of the sea. There were only 20 lifeboats aboard. It was 74 years later when the sunken ship was found 2.3 miles deep on the ocean floor. I’m told that this is the only film of the ship in existence. It’s like watching a ghost.
More here: Official site of the NOAA Titanic Expedition 2004