Error in the above is the chorus isn't actually everpresent as it doesn't occur in the 'collier' variants.

Here's Whittaker's Northumbrian minstrelsy 'fisher' variant which has 2 stanzas and the chorus from TRS.

O the Bonny Fisher Lad

On Bamboroughshire's rocky shore,
Just as you enter Boumer Raw,
There lives the bonny fisher lad,
The fisher lad that bangs them a'.
    O the bonny fisher lad
    That brings the fishes frae the sea,
    O the bonny fisher lad,
    The fisher lad gat had o' me.

My mother sent me out one day
To gather cockles frae the sea;
But I had not been lang away,
When the fisher lad gat had o' me.

A sailor I will never marry,
Nor soldier, for he's got no brass;
But I will have a fisher lad,
Because I am a fisher lass.

This smacks to me as a newly written parody, not from oral tradition. It has been much reprinted but I know of no oral versions not based on this one.