The USS Indianapolis was a Cruiser that was torpedoed by a Japanese sub just a month before the end of WWII. It was on a secret mission and the ship sank within 15 minutes, no distress signal was sent. While 900 of the crew was able to survive the sinking, sharks, dehydration and exposure killed 2/3 of them before being found 6 days later. According to this USA Today article, a movie may be made.
Hollywood to tell harrowing story of the USS Indianapolis
Hollywood to tell harrowing story of the USS Indianapolis