"richard" wrote in message
oups.com...
It still amazes me that there is no better system than red and
green
bouys that change and mean just the opposite halfway thru a
difficult
channel. I have seen this in a number of places such as Woods
Hole or
the Coast of Maine or Boston and nearby harbors. I use charts
more
often than not and almost always in unfamilar waters, but I hope
that I
will live to see the day when one can look at the navigational
aids and
know right away what they mean.

Where there's chance of ambiguity, Europe uses cardinal bouys as
well as the red and green. Is this not common practice in the USA?

JimB