Where we cruise
, many of the surveys that are used for the most current
charts are 100 years out of date.
As for up-to-date marks, ranges, etc, those sticks the locals push into the mud change or disappear regularly and the bleach bottles on a string sink every couple of weeks - no charts could keep current
with them no matter how hard they tried.
3 year old charts are no problem.
I have the very latest up-to-date CMap charts on a chartplotter
and the CM93/2 on a computer. I have never seen a difference between them from Panama
. Not a single