In 1963 Boy Telegraphist William Piggott was one of ten survivors of Jutland who recorded their recollections for an episode of the BBC programme the Great War. William is audio clip number 5 at https://www.iwm.org.uk/history/voices-from-the-battle-of-jutland .
There is also a 23 minute audio clip at https://www.iwm.org.uk/history/voices-of-the-first-world-war-jutland .
Transcript: I was in there about 47 hours for a start with no food! They never give us any food… In those days, they didn't worry about anything like that. See, I picked up a bit of bread in the stokers’ mess going through. Every one of the bulkhead doors, while the battle was on, should have been guarded by a stoker and the doors were shut with clips on. But they wasn't. There was a stoker there in the deck but they got fed up with just sitting there, I suppose, and there was nobody in charge and I didn’t see many of them. And when I did go up there, about six in the evening, I went through the stokers’ mess and I grabbed a piece of bread off one of the tables and ate it. I hadn't had no food!