An edition of Practical navigation, or, An introduction to the whole art (1672)

Practical navigation or An introduction to the whole art

containing many useful geometrical definitions and problems; the doctrine of plain and spherical triangles; plain, mercator, and great-circle sailing; sundry useful problems in astronomy; the use of instruments: the asimuth-compass and ring-dial. The fore-staff, quadrant, and nocturnal; the plain-scale, Gunter's-scale, plain-chart, Mercator's-chart, both globes, and virtues of the loadstone. Useful tables of the moon's age, of the tides, of the sun's place, declination and right ascension; of the star's right-ascension and declination; the latitude and longitude of places, and a table of meridional parts: likewise a new traverse-table, and the use thereof in keeping a reckoning at sea: also a table of 10000 logarithms, and of the logarithm sines, tangents and secants. All carefully corrected with many useful additions

By John Seller