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Forum: Navigation

25-12-2011, 16:14

Replies: 92

Differences Between Ground, Apparent, and True Wind Direction

Views: 26,536

Posted By TeddyDiver

Re: Differences Between Ground, Apparent, and True Wind Direction

I believe that the most confused discussion of the terms comes from the fact that (old days?) sailors (me anyways) didn't bother to think what true wind means, just it's true enough. Besides during...

Forum: Navigation

23-12-2011, 14:20

Replies: 92

Differences Between Ground, Apparent, and True Wind Direction

Views: 26,536

Posted By TeddyDiver

re: Differences Between Ground, Apparent, and True Wind Direction

Vane on the mast senses only apparent wind. To get true (or whatever name) it got to be calculated from boat speed. For that we can use either in water sensor (log or transducer) or GPS data. The...

Forum: Navigation

23-12-2011, 11:23

Replies: 92

Differences Between Ground, Apparent, and True Wind Direction

Views: 26,536

Posted By TeddyDiver

re: Differences Between Ground, Apparent, and True Wind Direction

No it isn't that complicated. According your description your GPS knows the tides and ocean currents all over the seas every possible time to the distant future.. ?? The whole mess is to blame some...

Forum: Navigation

23-12-2011, 08:47

Replies: 92

Differences Between Ground, Apparent, and True Wind Direction

Views: 26,536

Posted By TeddyDiver

re: Differences Between Ground, Apparent, and True Wind Direction

Don't you know they are farming ground wind nowadays :whistling:
FAA and Air Force Ground Wind Farm Development...

Forum: Navigation

22-12-2011, 22:33

Replies: 92

Differences Between Ground, Apparent, and True Wind Direction

Views: 26,536

Posted By TeddyDiver

re: Differences Between Ground, Apparent, and True Wind Direction

Ground (speed) is all about boat speed relative to ground (sea floor) nothing to do with the wind..
True wind is wind relative to ground.
And apparent wind is relative to boat.
All headings true...

Showing results 1 to 5 of 5

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