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How to Use Plastic Sextants with Applications to Metal Sextants and a Review of Sextant Piloting

David Burch

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ISBN 10: 0914025244 / ISBN 13: 9780914025245
Published by Starpath Publications
New Condition: New Soft cover
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About this Item

106 pages. Dimensions: 9.1in. x 7.3in. x 0.3in.Sextants are used to measure angular heights of celestial bodies above the horizon to find the latitude and longitude of the observer. They can also be used on land with artificial horizons. Sextants can also be used to find the correct Universal Time by measuring the angular distance between the moon and another body along its path across the zodiac. In coastal waters or on land, sextants can be used for very accurate piloting by measuring the horizontal angles between charted landmarks. The vertical angle of a peak above its baseline determines the distance to it, which, combined with a compass bearing, yields a position fix from just one landmark. The angular dip of an object (island or vessel) below the visible horizon can also be used to determine the distance to it. This booklet explains how to get the best results from plastic sextants, and presents numerical comparisons with similar data from metal sextants. Sextant piloting techniques are also reviewed as they are an ideal use of a plastic sextant. This item ships from multiple locations. Your book may arrive from Roseburg,OR, La Vergne,TN. Bookseller Inventory # 9780914025245

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Bibliographic Details

Title: How to Use Plastic Sextants with ...

Publisher: Starpath Publications

Binding: Paperback

Book Condition:New

Book Type: Paperback

About this title

Synopsis:

Sextants are used to measure angular heights of celestial bodies above the horizon to find the latitude and longitude of the observer. They can also be used on land with artificial horizons. Sextants can also be used to find the correct Universal Time by measuring the angular distance between the moon and another body along its path across the zodiac.

In coastal waters or on land, sextants can be used for very accurate piloting by measuring the horizontal angles between charted landmarks. The vertical angle of a peak above its baseline determines the distance to it, which, combined with a compass bearing, yields a position fix from just one landmark. The angular dip of an object (island or vessel) below the visible horizon can also be used to determine the distance to it.

This booklet explains how to get the best results from plastic sextants, and presents numerical comparisons with similar data from metal sextants. Sextant piloting techniques are also reviewed as they are an ideal use of a plastic sextant.

From the Inside Flap:

The sextant sight taking procedures discussed in this book are the ones to follow to achieve the best sights with all sextants, metal and plastic—it is just more crucial that navigators follow these procedures when using plastic sextants if they want to achieve practicable accuracies.

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Orders usually ship within 1-2 business days. Books are shipped from multiple locations so your order may arrive from Las Vegas,NV, Roseburg,OR, La Vergne,TN, Momence,IL, or Commerce,GA.

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