GPS coordinates in SE Asia

[markcash]

I was just wondering, after reading about the big earthquake and plates shifting and islands moving by as much as 100 feet in some instances, should we now consider all charts and GPS navigation aides as suspect?

[paulk]

Two questions:
1/ Were the coordinates right in the first place? I hear that many of the charts people use are actually based on British Admiralty Charts from the 1800''s.
2. If you''re within 100 feet of an island, shouldn''t you be able to see it, and avoid it? Corrections will be made, if needed, to software packages showing where things are. In the meantime, GPS will still show you where YOU are. If you''re approaching anything, even New York City, which hasn''t moved much recently, you still need to be alert and on watch. If you''re navigating in the dark with your eyes only on the GPS, please let the rest of us know when you are coming so we can avoid you.

[sneuman]

Good point, I''m preparing for a trip from Hong Kong to Vietnam and the latest charts available for Nha Trang (in Vietnam south) are based on French charts from the 1800s!