Island charted in wrong place for 85 years

[Lodesman]

Further proof that all navigation information should be taken with a grain of salt, even the charts. Trust but verify. https://www.dailymail.co.uk/news/art...-85-years.html

[Cheechako]

Many of the islands in the Sea of Cortez were off by a half mile or something like that for 150 years! Might still be on charts...?

[Tetepare]

For years Google Earth reported that the largest uninhabited island in SoPac, Tetepare, was 50km from Rendova Island; it's more like 10km tops.

Most of the time I find shoals that aren't marked, or charted very well. We were sailing a beat well off a well known rock shoal when my wife pointed to a big log sticking up out of the water only 30m away and asked why it was there- we altered course immediately!

[Orion Jim]

There has been a lot of “correcting” going on for centuries. Our precise navigational tools have been a godsend. In times past it was advantageous to plot positions accurately to support your benefactors goals of trade and military advantage. It was also common to keep two sets of charts, one for your use and one to fall into the hands of your foes, whether military or trade. If their ships happened to founder the realm was secure for another day.

[Chotu]

Originally Posted by Tetepare

For years Google Earth reported that the largest uninhabited island in SoPac, Tetepare, was 50km from Rendova Island; it's more like 10km tops.

Most of the time I find shoals that aren't marked, or charted very well. We were sailing a beat well off a well known rock shoal when my wife pointed to a big log sticking up out of the water only 30m away and asked why it was there- we altered course immediately!

Your AIS and chart plotter combined with autopilot didn’t spot the log and shallow area???

Ha ha ha. Couldn’t resist. A good reminder to use the eyeballs.

[Ballsnall]

Originally Posted by Chotu

Your AIS and chart plotter combined with autopilot didn’t spot the log and shallow area???
.

It wasn't a commerical log so AIS is not mandatory.

[Chotu]

Originally Posted by Ballsnall

It wasn't a commerical log so AIS is not mandatory.

Ha ha ha ha. That’s a good response!

[glenn.225]

There are sections of Newfoundland, last charted by Cook.



And I've found islands in the lower St Lawrence and rocks in Lake Ontario not charted.



Don't depend entirely on your chart.