A ship is to reach a place is 15° south of west. In what direction should it be steered if declination at the place is 18° west?

Ans: 87° west of North

How do you get this answer?

1 Answer
SCooke
Aug 25, 2017

The declination is an off-set.

Explanation:

"Declining" 18' West from 15' South of West results in an actual direction of (18 - 15) = 3' North of West. FROM North we get a direction of 90 - 3 = 87' West of North.

It may help to draw it out on a circle and use a protractor to see the angles.

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