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Forum: Marine Electronics

16-01-2015, 10:47

Replies: 357

Another foundering how do chart plotters get it wrong

Views: 36,644

Posted By hellosailor

Re: Another foundering how do chart plotters get it wrong

Before we blame the poor navigators....no, wait, its too late for that isn't it?

Before I got involved with GPS and Google Earth, I thought I was up and cartography naviguessing. And found that...

Forum: Marine Electronics

08-01-2015, 16:27

Replies: 357

Another foundering how do chart plotters get it wrong

Views: 36,644

Posted By hellosailor

Re: Another foundering how do chart plotters get it wrong

Carsten-
"3- The boat was then moved about 100 meters (yards) to one side"
Are you certain of that? In the US, boats usually move forward much easier than "to one side". Perhaps this is a Colonial...

Forum: Marine Electronics

05-01-2015, 18:25

Replies: 357

Another foundering how do chart plotters get it wrong

Views: 36,644

Posted By hellosailor

Re: Another foundering how do chart plotters get it wrong

"2 Chart plotter electronic maps are accurate copies of paper charts."
Actually, not in the US and not in any modern cartography department. Electronic maps may be rendered directly form a digital...

Forum: Marine Electronics

05-01-2015, 15:47

Replies: 357

Another foundering how do chart plotters get it wrong

Views: 36,644

Posted By hellosailor

Re: Another foundering how do chart plotters get it wrong

"your GPS can have up to a 10% variation on your location at any given time."
Your friend may have los something in translation. While the civilian signal MAY be degraded, IIRC it was Jimmy Carter...

Forum: Marine Electronics

05-01-2015, 11:48

Replies: 357

Another foundering how do chart plotters get it wrong

Views: 36,644

Posted By hellosailor

Re: Another foundering how do chart plotters get it wrong

The skipper was perfectly competent. The software flawless, and the charts perfectly accurate.

Jihadis moved the island in the dead of the night, in order to wreak havoc on Australian...

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