Yes, that's it, that's what I was saying. Thank you Shen.

Scotty


"Shen44" wrote


I think he's saying that US charts require the operator of the vessel to
pay
attention to his/her surroundings, know how to read the charts, know how
to
make use of the information provided, and know how to apply that
information to
other variables which may make the "datum" inaccurate, for a given moment
.....
now that I think about it, so do B.A. charts.
No chart/system, is perfect. You need to know which system you are using
and
what it's plusses and drawbacks are.

Shen