problems the man would have faced were exposure and dehydration. “The basic rule is: no water, no food. You need water to digest protein. If you have no fresh water and it doesn’t rain for a few days, so you can’t collect rainwater, you have basically had it.” Individual physiology also plays a part, he said, with some people better suited to survival than others. “The mental thing is key and that’s often down to people’s situation in life and how used they are to dealing mentally with hardship.” Stories of survival in the vast Pacific Ocean are not uncommon. In 2006, three Mexicans made international headlines when they were discovered drifting, also in a small fibreglass boat near the Marshall Islands. They claimed to have survived for nine months at sea on a diet of rainwater, raw fish and seabirds, with their hope kept alive by reading the Bible. But Cliff Downing, who teaches sea survival to sailors, said he was sceptical about the latest tale. “It just doesn’t sound right to me. There are 1,001 hazards that would make his survival for so long very unlikely. One would want to know a lot more.” More castaways: Poon Lim, a Chinese sailor from a British ship sunk by a German submarine in 1942, survived 133 days on a wooden raft floating in the South Atlantic before being rescued by Brazilian fishermen. In 1971, experienced Scottish sailor Dougal