What strange quirks did you have on your boat? One I remember (from, I think it was Sealion, but might have been Cachalot) were "GONE" chits. If someone left anything loafing around, it would be removed, and in its place would be left a chit with the word "GONE". This would happen in an instant, and anyone was a target, including members of the bunrun.The perpetrator(s) went undiscovered, and it was only after a plea from the skipper that the practice ceased. We also had the baseplate award - if you fecked up, you were made to wear an SSE baseplate on a length of string round your neck until relieved by the next miscreant. Stupid I know, but hey - Submarines not Royal Marines - right?