The words that I know to Jacky Tar/Jack's the Lad/Sailor's hornpipe are

He's a naval man. You can tell it when he walks.
He's a naval man. You can tell it when he talks.
And the drunken things he'll utter
When he's lying in the gutter,
You can bet your bread and butter
He’s a naval man.

He's a naval man of the ocean-going sort.
He’s a naval man with a girl in every port.
If you see him squeeze and hug her
When he gets aboard the lugger,
He’s a dirty rotten bosun
Of a naval man.

If he gets you in a row boat on the Serpentine,
And he tries to get he hands upon your Plimsol Line,
If he grabs you without warning,
You’ll be scuppered in the morning.
You can bet the skin you're born in
He’s a naval man.

Surprised you didn't know this version McGrath. I learned it from a guy at the old Hoddesdon Folk Club.

HTML line breaks added. --JoeClone, 20-Feb-02.