4 Extra Debut. The story of the amateur sailor's ill-fated entry into the 1968 round-the-world yacht race. With Andrew Sachs. From July 1970.

The story of an amateur sailor's ill-fated entry into the 1968 Sunday Times round the world yacht race.

On 31st October 1968, Donald Crowhurst sailed out of Teignmouth, Devon aboard his trimaran. Nine months later it was found, intact, in the North Atlantic - but he'd disappeared.

The logs and tapes left behind reveal indisputably that Crowhurst did not sail round the world, but only in the Atlantic. So if he charted a fictitious circumnavigation, why did he leave sufficient proof behind to reveal the truth?

Tony Salmon tells the story of a real voyage and a false one. But it's also about two voyages in another sense: the voyage of a boat and the journey of a man's mind.

Keen to win the newspaper's Golden Globe Race cash prize - were the pressures which drove Crowhurst to his end uniquely of his own time?

With the voices of Donald Crowhurst, Rodney Hallworth, Dr Glin Bennet, Stanley Best, Nicholas Tomalin, John Norman, Ronald Hall and Arthur Blaydon.

Readers: Andrew Sachs, Donald Heighway and Brian Gear

Script: Brian Gear

Producer: Brian Miller

First broadcast on BBC Radio 4 in 1970.