01-30-11, 05:09 PM
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#11
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Ocean Warrior 
Join Date: Sep 2008
Location: Notify command we have entered the Grass Sea
Posts: 2,822
Downloads: 813
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Quote:
Originally Posted by Nisgeis
Torpx means that if, after adding or subtracting 90, if your result is greater than 360, then subtract 360, but if the result is less than zero (instead of 360 as stated), then add 360.
Course = 300 from port, 300 + 90 = 390. Result is greater than 360, so subtract 360 to give steering course of 30.
Course = 45 from starboad, 45 - 90 = -45, so add 360 to get steering course of 315.
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That I can understand!
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