Recently, for reasons I dare not even try to understand never mind explain, I found myself singing "What Do We Do With a Drunken Sailor?". Rare as this is, it's even rarer when I'm at a computer, which meant that for the first time I had the presence of mind to try to check something about it.
One of the things that we do with a drunken sailor is "Put him into bed with the captain's daughter". It's a well-known fact that the "captain's daughter" is another name for the cat-o'-nine-tails, which is why this is a punishment for a drunken sailor. Of course, the correlation between things that are well-known and things that are true isn't very strong. So I thought: at last! A chance to actually check this fact!
Wikipedia, of course, confirms it, which does nothing whatsoever to convince me. Actually, I was hoping it would have a reference, but no, it doesn't. The web is similarly willing to confirm it, similarly without any actual convincingness. Google Books seemed like a good place to look, but the fact that Pushkin wrote a short story called "The Captain's Daughter" somewhat overwhelms the search; you can add "whip", but that's more or less the websearch equivalent of begging the question—of course if you add "whip" to the search, you get hits confirming that it's a whip. As it happens, those books are things like 2010's
The Book of Pirates and 2002's
Pirattitude!: So You Wannna Be a Pirate? Here's How!, which rank somewhere below Wikipedia on sources I'd trust. (Also a page in
Anticraft: Knitting, Beading and Stitching for the Slightly Sinister, which tells me "These days, however, a taste of the Captain's Daughter can be quite sexy (assuming everyone is a consenting adult)", just before instructions on how to crochet one. I'm also taking this to be less than authoritative.) What's very much lacking from Google Books is any kind of authentic reference to "the captain's daughter" as a flogging device of any sort.
(I was starting to doubt that the song itself was even authentic, but there are indeed results from the late 1800s for "What Shall We Do With The Drunken Sailor"—for instance, in
The Water-Babies, serialized in the early 1860s; and seems to be mentioned with the same title by Dickens in 1856. But I digress.)
My readers being either well-educated in the ways of historical sea shanties, or else as vile a mob of scurvy dogs as ever raised a mug of rum, seem likely to be able to answer with certainty. Why
was "the captain's daughter" considered punishment—assuming that that line is as authentically 19th-century as the rest of the song? (Not obviously the case; Google Books only returns one hit for the combination of "What Shall We Do..." and "captain's daughter", and it's from 2010.) I've seen theories—a captain's daughter was simply that unattractive; being found in bed with his daughter by the captain was a guaranteed flogging—but someone out there must know the actual fact of the matter, or know someone who knows.