Ha! I wish I were somewhere sunny..
Sorry about not sending anything on this. I contacted a few people when you first posted, then forgot about this. I JUST emailed some more people and reemailed the people I had sent to on this before. When I find something, I will send it to your email.
Theres not too much I can tell you, I remember being on it a couple of times in the 94/95 time, but after that it wasnt used by the sea cadets for summer camp training. Before that it was a YAG (or YFB I cant remember). I dont remember the number either. YAGs were used for navigational and general naval duties training.
The cadet website that JJ posted <might> help, but its mostly current cadets not the older ones from mine and older eras.