Sight reduction by pocket calculator

Article Abstract:

Sailors can use a scientific calculator and two formulas to avoid the need for standard tables in sight reduction. Calculators must have a memory function which will then be used to determine the computed altitude and azimuth. A sample problem is discussed.

Usage, Equipment and supplies, Sailing, Calculators, Aids to navigation, Navigation aids

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Finding your way at sea

Article Abstract:

Tips for emergency use of celestial navigation are presented. Offshore sailors who are unsure of their position can also use nautical signposts, water characteristics, clouds and winds to determine location.

Navigation

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Plot, counterplot

Article Abstract:

Preparing a plotting sheet is the first step in celestial navigation. Sights are taken in the morning and the afternoon. The lines of position are crossed to determine afternoon position.

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