A NYHarbor tugman tells this story of serving on a particular ship, early in his career:
When his ship was in the same port with other vessel of the service, they would have to be extra vigilant to keep rival comrades from playing pranks with the ship’s good name. All it took was two lengths of thick black tape, crossed.
It was called being on the “X” watch.
Someone at A and A Coffee Shop was slacking off: