Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News Editorials & Other Articles General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search

Environment & Energy

(54,274 posts)

15. True Virgins Make Dull Companions

Sun May 19, 2013, 06:43 AM

May 2013

Learned that in pilot training.
True heading +/- Variation = Magnetic heading +/- Deviation = Compass heading.

Edit history

Please sign in to view edit histories.

0 members have recommended this reply (displayed in chronological order):

21 replies

= new reply since forum marked as read

Highlight:

The North Pole moves as ice sheets melt (Greenland is losing mass) [View all] NickB79 May 2013 OP

.... limpyhobbler May 2013 #1

'It's always something...' freshwest May 2013 #2

And Greenland will be green again!!11!1!!1 corkhead May 2013 #3

It's going to rise as the weight of the ice comes off. DCKit May 2013 #16

There exist many ominious warnings jimlup May 2013 #4

Pole shift... They mean geographical North? defacto7 May 2013 #6

Thanks for pointing that out. truedelphi May 2013 #7

This is going to fuck navigation all up. HooptieWagon May 2013 #8

Lines are lines. Probably not. defacto7 May 2013 #9

No, magnetic pole is only used to keep course. HooptieWagon May 2013 #10

Interesting... defacto7 May 2013 #12

OK, a brief rundown. HooptieWagon May 2013 #13

For a change of a few centimetres a year? No. muriel_volestrangler May 2013 #19

Yeah, you're right. HooptieWagon May 2013 #20

In Thule, Greenland north is more west than north Major Nikon May 2013 #11

Variation. Deviation is a compass error caused by proximity to iron. HooptieWagon May 2013 #14

True Virgins Make Dull Companions trof May 2013 #15

+1 HooptieWagon May 2013 #17

I understand. It matters. trof May 2013 #18

Damn, that must have been a confusing several minutes. HooptieWagon May 2013 #21