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Problem 1: Sun sight

Aug 28, 2019

   
This problem is a sun sight that can be reduced to an LOP. For this problem, we use 2002 Nautical Almanac data (daily page info included below at right — for all other corrections you can use a Nautical Almanac from any year).

You’re delivering a boat from Florida to Bermuda. On May 30, 2002, your DR position is 30° 46’ N, 68° 05’ W. Your height of eye is 9 feet and your sextant has an index error of 1.1’ on the arc. You shoot the sun’s lower limb at 18:26:51 GMT and get a sextant reading (Hs) of 62° 17.9’. Reduce the sight and plot the LOP.

 



Answers:
Azimuth (Zn): 256°
Intercept: 3.6 nm away

Edit Module

Sep 14, 2019 07:22 pm
 Posted by  fclouston

Good day,

Excellent article.

However my calculations show an intercept 6.4 nm towards the stated Zn.
In fact, this solution is what is represented in the accompanying figure.

Francis Clouston
s/v Mikado III
Montreal, QC, Canada

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