The greens are between the sea and thee transiting the ICW. Reds are inland
side. However, at channel intersections and, more importantly, where local
and ICW are one in the same, the local marks will usually take precedence,
but ICW marks may be there too. So, it can get confusing. There may also be
an ICW preferred and secondary channel. ICW aids have small yellow decal
symbols: Triangles indicate aids should be passed by keeping them on your
starboard side. Squares indicate aids should be passed by keeping them on
your port side. A yellow horizontal band provides no lateral information; it
just signifies that the aid marks the ICW.

Always consult a chart if you are transiting unfamiliar waters.

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Eliminate "ns" for email address.
"Sandra" wrote in message
om...
Recently visited the Keys via boat. While navigating the Intra-coastal
I notice that the green-red channel markers were backwards from all my
other boating experience(inland). Does anyone know the logic behind
this or can tell me where I went wrong in my thinking?

Scott