We managed to watch two interpretations (both released this year) on successive weekends of this tragic story of Donald Crowhurst’s attempt to sail around the world non-stop. I ended up liking both for very different reasons. This is a low-budget trippy film which captures vividly the isolation he must have experienced.
The bulk of the film is set during his voyage, with occasional hallucinatory flashbacks to life before he set off. The whole thing had a kind of creeping horror, and a dream-like feel.