Cast the Expert: Director Claude Whatham scouted in sailing clubs to cast some of the child actors.
Follow the Leader: Although it was produced by the same production company and producers, the 1974 adaptation was made to cash on the success of the 1970 film adaptation of The Railway Children.
2016 film:
Adaptational Nationality: In the books Mrs. Walker was born in Australia. In this version she's from Scotland, probably because she's played by Scottish Kelly Mac Donald.
