These tiles are an almost complete representation of the International Flags used by seafaring, ocean going ship all over the world. There are only two flags missing. One is the Sub 3 flag, (a flag that can be used to substitute for another letter), and the other is the Code flag. Other than that they are a pretty fair representation of the original flags. The Morse code, dots and dashes, have been taken from my copy of these flags also. If you hang an individual flag, it also has a special meaning. For instance if you hang the Blue and White checkered flag, (N) it means "No". The (B) flag means "Yes", and each of the other flags also have a special meaning. JAKE THE MILLWRIGHT