Thread: Reading chart
View Single Post
  #2 (permalink)  
Old 04-25-2008
camaraderie's Avatar
camaraderie camaraderie is offline
Moderator
  
Join Date: May 2002
Location: NC
Posts: 9,718
Rep Power: 8
camaraderie has a spectacular aura aboutcamaraderie has a spectacular aura about
The variation is 18 and 1/2 degrees which may be expressed as 18 degrees 30 minutes OR 18.5 degrees in decimal notation. All the same thing.
Now 19 minutes West is heading BACK towards true north and over three years that is 57 munutes. Simple arithmetic brings you back three minutes short of a full degree or 17 degrees 33 minutes EAST variation. This may be expressed also as 17 and 11/20ths degrees or 17.55 degrees.
__________________
Tayana 52 Ketch
Reply With Quote