My guess is that Fox Smith was annoyed by the social and psychological misrepresentation of the material as the commercial discs presented it.

She knew something about the realities of seafaring. These had nothing to do with the extremely mannered, "jolly-tar" stereotype that's existed since the 18th Century. (Check your nearest Ren Faire for Pyrate bands and you'll see things haven't changed much.)

She may have wanted greater public recognition of what kind of work sailors really did, and an end to the idea, as Stan Hugill memorably put it, that sea labor was like being on stage in some kind of floating music hall. (Forgive the paraphrase from memory!)