Thanks all for the welcomes. My grandpa was only a cook

Although I don't discredit the awesome experience he must have had. Unfortunately I rarely speak to him - he lives in Wales, and we're here in America. I should get on it that though, and ask him what it was like to live aboard one of those things. I do know he was captured towards the middle of the war, and placed in a POW Camp in Britain, and later America. He actually met his future-wife while being imprisoned believe it or not in Britain - which is why he's in Wales now.
I'll remember the 30k thing, and I did remember the game saying something, but I was in such a bad mood I just clicked without thinking, or reading. Bad move. I've learned my lesson, and after work tonight cannot wait to get back in the control room.