Here's one from the early 1840s confirming Northeastern English sailors were doing some kind of capstan songs—no surprise, but to add the small-ish body of data. The author uses the word "chaunt" to encompass working songs.


1842         M., C. "Songs for the People." _The Musical World_ [weekly, London] 17(17) (28 April, 1942): 130.

Sort of an early essay on "folk song" (though not called that).

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But if these chaunts have not much meaning, they will not produce the desired effect of touching the heart, as well as animating the arm of the labourer. The gondoliers of Venice while away their long midnight hours on the water, with the stanzas of Tasso; our sailors at Newcastle, in heaving their anchors, &c, use a song of this kind. A society, instituted in Holland for general good, do not consider among their least useful projects, that of having printed, at a low price, a collection of songs for sailors.
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Hmm, a collection of songs? But were they work songs?