THE ASTRA III SEXTANTS
Just as the Astra IIIB has become world famous as the premier low cost metal sextant, the Astra III Professional Model with its low cost, high accuracy, and excellent handling qualities is destined to be the standard for professional seamen.
These high-quality, accurate instruments with excellent optics are popular with both beginning and professional navigators. The Astra III Sextants have somewhat revolutionized celestial navigation because never before have such high quality, accurate metal sextants been available at such low prices. Over 30,000 sextants of these models have been sold in the US alone, far more than any other serious sextant. Its popularity has spread throughout the rest of the world as well, making it the most recognized (and supported) sextant worldwide.
Today’s low cost metal marine sextants offer high accuracy and ease of use. These reward the beginner’s efforts, and satisfy the professional’s demands.
We’ve sorted out the best plotting tools for navigation. While there are just a few basic tools needed for navigation, there are many, many options available.
“Sight reduction”, is a term given to the way a sextant sight is transformed into a line of position on a chart. It is what the so called “math” concerning celestial navigation is all about.
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