As a note to Martin's recollection on the Mystic night time shanty blast, as I remember it, the rough language was a greeting to us as we came in the door, and the comment was as much about "what have I done putting this lot together" than Barry's greeting.
The song was about a British Convoy that the Germans had warned Britain not to send and they sent it any way and it got sunk, he was going to send the words, he did sing it to Dick Miles at the back of the stage at Scarborough Seafest but I don't know if he got a copy of the words.
I also have his signature on my Mystic Tee shirt, and you may guess, suitably appropriate rough language.