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Forum: Navigation

27-03-2014, 09:51

Replies: 69

Deviation Table from GPS

Views: 17,265

Posted By cal40john

Re: Deviation Table from GPS

When I did it I was on a lake on a windless day with the autopilot steering a constant course long enough to see it settled out. Of course you need to see if the engine running or not has an effect.

Forum: Navigation

15-03-2011, 07:57

Replies: 69

Deviation Table from GPS

Views: 17,265

Posted By cal40john

Re: Deviation Table from GPS

If the COG is heavily damped then when you change course COG is going to lag and then slowly creep onto the new course. With enough damping it could be minutes, but the lag is going to be huge at...

Forum: Navigation

15-03-2011, 06:32

Replies: 69

Deviation Table from GPS

Views: 17,265

Posted By cal40john

Re: Deviation Table from GPS

What does typical mean? I seem to remember that when I was making the deviation table that it took less than 10 seconds for the course on the GPS to stabilize, and I assumed some of that time was...

Forum: Navigation

13-03-2011, 18:07

Replies: 69

Deviation Table from GPS

Views: 17,265

Posted By cal40john

Re: Deviation table from gps

I made a deviation table using my GPS, but in addition to a calm day I did it on a lake with no current. Current would be very bad. I also used my autopilot to get a much straighter course.

John

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