I think my datum comment was a mis-reading of "the track for Port resolution is a half mile inland." If stuff is randomly off, you're probably dealing with a drunken, sextant-wielding, long-dead old-school cartographer. If stuff is systematically off, you're looking at something like datum shift.
I love how we - a bunch of stuck-in-tradition sailors - have suddenly labeled satellite
imagery as "ancient," and how we're now discounting options because they don't have certain information! Are the otherwise-inaccurate paper charts more precise when it comes to things like "depth, submerged hazards, and channel/buoy information"? "Oh - this thing shows us 3 miles inland! I was wondering why that mountain had a buoy drawn on it!"
The oldest imagery used around St. Georges, Grenada
in Google Earth is from Nov 4, 2003 - still before Hurricane
Ivan, but still significantly less than a decade old. I suppose the paper maps have all been updated and distributed in that same timeframe?
Interestingly enough, the west side of the harbor is from 12 July 2009.
You can also get dozens of current
photos of the harbor from Google Earth.
Does your paper chart do that? I just can't remember.
As I said way back in February, tools are only as good as their user. You're a fool if you try to use a tool - any tool - without knowing how it works. I see absolutely no evidence, in this thread or elsewhere, that electronic charts do not have huge benefits over paper for those willing to embrace and understand the technology.