2 on 5 january , tony sailed into very bad weather 1,500 kilometres south of perth , australia .
there were winds of 90 kilometres per hour , and waves 15 metres high .
tony's 18 - metre yacht , the exide challenger , capsized .
it was dark and cold inside the yacht .
there was only enough air for a few days , and tony had only a small piece of chocolate to eat .
but tony was a very good sailor . he knew that if he went outside the yacht , he would die .
he decided to wait inside the yacht .