Water water everywhere
While the pair had stocked the boat with enough water for their original 30-hour trip, this time frame had long since gone, and they needed to stay hydrated. Whilst surrounded by water, every good seaman knows that you should never drink salt water, so the pair had to think of something else.
Desperate, they decided to drink their own urine, in the hope of staying at least a little hydrated. The act of drinking made them feel as if they were doing themselves some good, but actually, it was making their dehydration worse. It was 14 days until they heard the wonderful sound of raindrops on the roof of the icebox they were huddled in.