Of course you don't have any trouble remembering which side the red and green colors are in the A & B regions? But here is a trick to help. The Right Hand side coming from sea, the day mark is always TRIANGULAR and the left hand side marks are SQUARE. See this well done web site link, with an excellent map. http://tinyurl.com/282m2v Mike _____________________________________ Capt. Mike Maurice Beaverton Oregon(Near Portland)