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» Online Classroom   » Inland and Coastal Navigation   » Public Discussion of Inland and Coastal Navigation   » Nav Workbook 1210tr ex 4.16 (C) (d) and (e)

   
Author Topic: Nav Workbook 1210tr ex 4.16 (C) (d) and (e)
Lance


 - posted April 20, 2020 04:25 AM      Profile for Lance           Edit/Delete Post 
In Navigation Workbook 1210tr,the answers given to exercise 4.16 (C) (d) and (e) on page 82 appear to show easterly deviation being subtracted from Compass to convert Compass to Magnetic. Problems (f) and (g) adjacent have westerly deviation, which appears to be subtracted - apparently correct. I am unable to understand why both easterly AND westerly deviations are being subtracted.

I'm wondering if this might be an error. Or has

From: Hobart, Australia
Lance


 - posted April 20, 2020 04:28 AM      Profile for Lance           Edit/Delete Post 
Oops, hit 'Add Reply' before typing the end of the last sentence. I meant to say 'Or has this been published in the errata somewhere I haven't looked'?
From: Hobart, Australia
Capt Steve Miller


 - posted April 20, 2020 07:03 AM      Profile for Capt Steve Miller           Edit/Delete Post 
4-16 C (d) & (e) East deviations should be ADDED not subtracted - (d) M should be = 336 (e) M should be = 049
4-16 C (f) & (g) West deviations are correctly subtracted

From: Starpath


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