For hours after their boat sank, Ken Henderson and Ed Coen threaded water in the Gulf of Mexico, talking about life and death while struggling to survive. For more than 30 hours, it worked.
Then Henderson was forced to make a decision that would save his life, but not his best friend's.
Realizing that his friend was hallucinating and was losing consciousness due to the effects of hypothermia, Henderson severed the line that connected the two men and started swimming to a distant ( unmanned ) oil platform.
Henderson eventually reached the oil rig after hours of efforts and managed to climb on it.
Using a telephone he found, he raised the alarm and the U.S. Coast Guard rescued him a short time later.
Ed Coen wasn't so lucky, his body was found floating a few hours later by a fishing vessel.
Full story: http://www.seattlepi.com/news/article/Boat-sinks-Texas-man-survives-30-hours-in-Gulf-3437388.php