SDiverJim
Contributor
The crew of the U.S.S. Indianapolis was in the water for about 9 days without food or water. Dehydration and hypothermia caused the biggest problems for them. Hallucinations and hysteria also erupted after a few days. And while their skin did get saltwater sores on it, they were not life threatening.
One of the best books I ever read "In harms way" Story of the sinking of the USS Indianapolis.