Practical navigation, or, An introduction to the whole art [electronic resource] : 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 azimuth-compass, ring-dyal, variation-compass, the fore-staff, quadrant, plough, and nocturnal, the plain scale, Gunter's scale, sinical-quadrant, plain-chart, mercators-chart, both globes, the inclinatory-needle, and vertues of the load-stone, useful tables of the Moon's age, of the tydes, of the Sun's place, declination, and right-ascention, of the stars right-ascention and declination, the latitude and longitude of places, and a table of meridional parts, likewise a new traverse-table, and use thereof in keeping a reckoning at sea, also a table of 10000 logarithms, and of the log sines, tangents and secants / by John Seller, hydrographer to the King.