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Forum: General Sailing Forum

24-11-2010, 06:13

Replies: 25

Don't Rely on GPS ?

Views: 51,462

Posted By capt_douglas

A prudent and prepared sailor never relies on one...

A prudent and prepared sailor never relies on one source of information for their position. DR, celestial, or range and bearings should be used in conjunction with common sense and eyesight to make...

Forum: General Sailing Forum

23-11-2010, 15:59

Replies: 25

Don't Rely on GPS ?

Views: 51,462

Posted By capt_douglas

Why would the US shut down GPS when they have...

Why would the US shut down GPS when they have very effective electronic jamming technology?

And so do the South Koreans. And the Israelis. And probably the Chinese. And a lot of other countries.

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