Lunar and Horary Tables, for ... Ascertaining the Longitude

This intriguing and useful guide offers readers a detailed look at the methods used by mariners and navigators in the early 19th century to measure longitude and determine their location on the open sea. Drawing on his extensive experience as a ship's captain and navigator, author David Thomson provides detailed tables and instructions for using the movements of the moon and stars to make precise calculations of longitude. With clear, concise language and insightful analysis, this book is an indispensable resource for anyone interested in the history of navigation and the use of celestial bodies for time-keeping and orientation.

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