Replying to a comment from a number of years ago, I am very certain that "Bonny Ship the Diamond" was not sung in the film "Master and Commander". They sang a number of other things, but not that.
1) I've seen the film 17 times. If it were in there, I'd know.
2) "Bonny Ship.." is a favorite of mine. Again, if it were in there, I'd know it.
3) It's not AT ALL in period -- it's much later than 1802-ish when the film takes place (I recall that Nelson is still alive; Aubrey isn't talking about him as if he were 'late' and Blakeney asks what sort of man is he, rather than was he).