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Forum: Navigation

19-12-2010, 08:27

Replies: 174

In Creating a Route on Charts, Do You Use True or Magnetic ?

Views: 29,733

Posted By GordMay

It’s a shame that some of us choose to assign...

It’s a shame that some of us choose to assign mean or hostile motives to those that dare to critique the ideas that others have expressed.

Forum: Navigation

19-12-2010, 07:12

Replies: 174

In Creating a Route on Charts, Do You Use True or Magnetic ?

Views: 29,733

Posted By GordMay

Unfortunately, that wouldn't work when crossing...

Unfortunately, that wouldn't work when crossing isogonic lines at high latitudes, or near magnetic anomalies, where the variation/declination can change at a rate of over 1.5 degrees per mile.

I...

Forum: Navigation

14-10-2010, 11:19

Replies: 174

In Creating a Route on Charts, Do You Use True or Magnetic ?

Views: 29,733

Posted By GordMay

Apparently not. Variation does change, within a...

Apparently not.
Variation does change, within a local area, over time. Your chart's rose will show this change as "total degrees at the time of publication, and degrees per year. This gradual...

Forum: Navigation

14-10-2010, 09:10

Replies: 174

In Creating a Route on Charts, Do You Use True or Magnetic ?

Views: 29,733

Posted By GordMay

INDEED !!!

INDEED !!!

Forum: Navigation

13-10-2010, 15:44

Replies: 174

In Creating a Route on Charts, Do You Use True or Magnetic ?

Views: 29,733

Posted By GordMay

Since I always plot in "true”, I have to...

Since I always plot in "true”, I have to uncorrect (TVDMC) to get a compass (steering) course.
“True” direction is relative to true north (north pole).
“Uncorrecting” is converting from true to a...

Showing results 1 to 5 of 5

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