Thanks Chip, but the photo has found a more worthy home now! Why do you believe Semaphore? My only understanding of the Semaphore is from reading the Horatio Hornblower books and it was described as some giant thing with waving metalic arms. how do they work anyways??? Is it elactric or tugs on cord like morse code? very interesting indeed! you Imperial cats are a knowlegable lot! Always fun learning from you folks! Best, Sal Ricky can we beilieve your theory to be correct? Fairly certain? it makes sense to me.