From John M.:

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Here is a reference to ""Whiskey, Johnny" from 1857. In his book, THE MERCANTILE MARINE, E. Keble Chatterton [2009] prints a long quote from a "recently published" book by Sir Wiliam B. Forwood entitled REMINISCENCES OF A LIVERPOOL SHIPOWNER [1920]. Forwood is recollecting a voyage on the "Red Jacket" in 1857. Forwood says, "On the morning of 20th November, 1857...I embarked by a tender from the Liverpool pierhead." The anchor is heaved [via windlass] "to a merry chantie" which is "In 1847 Paddy Murphy went to Heaven".

[In 1847 Paddy Murphy went to Heaven
To work on the railway, the railway, the railway
Oh, poor Paddy works on the railway]

The next morning, they were off Holy head and the order came "loose the headsails." (pp. 158-159):

"Now then, my men, lead your topsail halyards fore and aft, and up with them'. And the crew walk along with the halyards, and then with a long pull and a pull all together the topsail yards are mastheaded to the chantie:

       "Then up the yard must go,
                Whiskey for my Johnny,
       Oh, whiskey for the life of man,
                Whiskey, Johnny.'"
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So, PADDY ON THE RAILWAY at the brake windlass...and WHISKEY JOHNNY at the halyards. It sounds like they may have been doing a stamp 'n' go maneuver at the halyards, but I don't see how that would work for the chanty. Reading it closer, I think the crew was perhaps just walking the slack, after which, in positions, they did a pull in place. What do others think?