© Noel Griffin 2003-2005
360 Degree Compass
Rose
Rose
N
E
W
S
360o
180o
090o
270o
045o
True North
Magnetic
North
-7o W
-7o W
Magnetic Variation 7o West on Shannon in 2004
TMC – Add Westerly Variation
² Steer 187oM using Compass for Heading 180oT
² Add W Variation to True
for Magnetic course
² Subtract W
Variation from Compass for True Heading
NE
SE
SW
NW