This is very Washington State Specific. The State Ferries serve Beer in the galley and years ago they had special cups that had sort of a late 70s early 80s logo of an outline of a ferry and it said "BEER" in big letters on it. (you needed to drink the beer in the galley, So this was a way of making sure you didn't wander around the boat drinking the beer) Someone made a shirt with that design on it. And I wanted to make one for myself ever since. But I can't find a picture online.