The seaman's sure guide, or, navigator's pocket remembrancer: wherein are given such plain instructions in every useful branch of navigation, as will in a short time form the complete mariner. Among the variety of essential articles contained in this Work are, The Method of Working Tides, or finding High Water at any Place. - Geometry, and the Doctrine of Plain Triangles. - To make Log-Lines, and correct Distances given by Log when the Glass, Line, or both are faulty. - The various Sailings, with Amplitudes and Azimuths. - To find the Apparent and True Altitudes of the Sun, Moon, and Stars. - The different Methods of finding the Latitude. How to find the Apparent Time at Sea, to Regulate the Watch. - The new Method of finding the Longitude by Sun and Moon, or Moon and a fixed Star. - To rectify Courses; with Rulés for correcting the Dead Reckoning, by an Observation in all Cases. - Exercising Examples of Days Works. - A complete log of a ship's voyage, with Instructions for writing a Journal from the Log Book, &c. &c. Upon an Improved Plan, For the Use of Schools. By J. Bettesworth, Master of the Naval Academy, Chelsea, and late Mathematical Master of the Maritime School.

Date:

M.DCC.LXXXIII. [1783]