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Calculating True Course Made Good

Your vessel is steering course of 197° psc, variation of the area is 7° East and the deviation is 4° West. The wind is from the west producing a two-degree leeway. What true course are you making good.

Given:

Compass Course = 197°
             Variation = 7° East
            Deviation = 4° West
               Leeway = 2°

What is asked?

Course made good

Solution:


In correcting a compass, that is compass to true:

+  if east
-  if west

Compass Course = 197°
            Deviation =  - 4° W
Magnetic Course = 193°
             Variation =  + 7° E 
       True course = 200°
              Leeway =   - 2°     (wind is from starboard, so subtract)
                              198° T is the course made good

Course Made Good
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7 comments:

  1. You want to make good a true course of 038° T. The variation is 5° E, magnetic compass deviation is 4° W and gyro compass error is 4° W. A southwesterly wind produces a 4° leeway. What is the course to steer per standard compass to make the true course?

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  2. hello if the Leeway is in the portside of the ship am i gonna add it or still subtract? thank you

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