Yeh, cool, but look, you 've missed the fourth couplet:

For a sailor it's always a bother of live
it's so lonesome by night and by day.
that he longs for the shore
and a charming young whore
who will melt all his trouble away.
All the .... and the rout
still the ... and stout
for him soon .... over
of the ... of a maid
he is never afraid
... of the Irish Rover.

If have any idea of what they were trying to say - share it with us.
Cheers, Largo