Actually, the words posted by Wolfgang don't scan to the tune of Cock of the North that I know, or at least I am having trouble fitting them in. I'm thinking of the fiddle or bagpipe tune. (The words I posted are sung by the soldiers as they march to it.) They also seem rather wistful for so fast a tune.

The small boat, I think, was called a cockle or cockle-shell, after the mollusc. Is it some Scots term.