(41CV) Fix at Sea

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An extract from A Step Forward In the Methods of Getting a Fix at Sea, Lt. (RNA) (H) Vicente MAESTRE GIMENO, International Hydrographie Review, Monaco, LX1I (2), July 1985 (pgs. 121-134)

ABSTRACT
This paper deals with a method of computing a set of astronomical observations to two or more stars without requiring a knowledge of the approximate geographical position of the observer in order to obtain a fix. Programmes for use with the Hewlett-Packard HP 41/CV calculator and in BASIC language are included. The author also describes an extended application of the method to processing observations made by “radio sextants” to provide twenty-four-hour continuous positioning offshore without recourse to radio, satellite, or inertial positioning systems.
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In the programmable calculator HP 41/CV in which previously we have loaded the program by means of the corresponding cards …
Once these data have been entered, following the program, we get …
We enter the data once again in the HP41/CV calculator …
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This paper is intended at present for yachtsmen; however, when electronic development is completed, the principles involved could be a useful tool for navigators, surveyors …
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HP 41/CV Calculator Program
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