In our club we have started using the IALA systime of Buoyage. Why ? because it makes it more interesting and I get fed up with people asking me which way the wind is blowing and I tell them North they say which way is north ...Dong... The IALA systime is based on 4 Cardinal points ---North, East, South & West each with its own top mark
and also channel buoys that are Red and Green, Entering a river or channel Red Buoy is to port Red to Red ...and the green buoy is to stb'd ...Green to Green leaving it's the opposite way around If you pass a north cardinal buoy --you pass to the north of it and so on sound confusing, not really I know some really dumb stick and string merchants who learned it and even they say its easy
the photo has some buoys in it (the Red & White one is the fairway buoy
Jimmy