Reeds Ocean Handbook by Bill Johnson

Author:Bill Johnson
Language: eng
Format: epub, pdf
ISBN: 9781472921420
Publisher: Bloomsbury Publishing
Published: 2015-09-27T16:00:00+00:00

37.The final thing is to work out the azimuth. Copy Z2 from above, and make it negative if F>90°.

38.On the next line, if F is negative, calculate and write down a new value for Z2, which is 180°–Z2 (otherwise leave blank).

39.Copy Z1 from above, then add Z1 and Z2 together to get Z.

40.Finally, follow the rules on the form to calculate Zn, the azimuth:

In northern latitudes,

if LHA>180° Zn = Z; if LHA<180° Zn = 360°–Z.

In southern latitudes,

if LHA>180° Zn = 180°–Z; if LHA<180° Zn=180°+Z.

Draw the position line

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