course relative to bearing help ?

bert8for3 · 05-12-08, 10:34 AM

From what you're saying, I think OLC must have been marking a reported bearing to the target using the protractor tool. The tool unfortunately does not mark bearings in straightforward 0 deg through 360 deg, but rather in 0 to 180 going starboard (right) and 0 to 180 going port (left). If he marked the protractor line out on 53 deg to port (left), the reported bearing must have been 307 deg, which for using the protractor (for port or left side bearings) has to be translated as 360-307=53. If the bearing was starboard (right) it would have been reported simply as 053 deg and you would just lay off 53 deg (right) with the protractor.

05-12-08, 10:34 AM	#17
bert8for3 Ace of the Deep Join Date: Dec 2005 Location: Canada Posts: 1,124 Downloads: 110 Uploads: 0	From what you're saying, I think OLC must have been marking a reported bearing to the target using the protractor tool. The tool unfortunately does not mark bearings in straightforward 0 deg through 360 deg, but rather in 0 to 180 going starboard (right) and 0 to 180 going port (left). If he marked the protractor line out on 53 deg to port (left), the reported bearing must have been 307 deg, which for using the protractor (for port or left side bearings) has to be translated as 360-307=53. If the bearing was starboard (right) it would have been reported simply as 053 deg and you would just lay off 53 deg (right) with the protractor. __________________