Ten years ago the trimaran Teignmouth Electron was found drifting in mid-Atlantic. Of Donald Crowhurst, the Somerset business-man who had entered her in the Sunday Times single-handed round-the-world race, there was no sign. Only when his logbooks were examined, did the world realise how tragic a voyage his had been. Jeremy James investigates the fact and fiction of Crowhurst's struggle with the sea and the lessons that have been learnt since about man going solo against the elements.