The mariners new calendar [electronic resource] : Containing the principles of arithmetick and geometry; with the extraction of the square and cube roots; also rules for finding the prime, epact, moon's age, time of high-water, with tables for the same. Together with exact tables of the sun's place, declination, and right ascension. Of the right ascension and declination of the principal fixed stars: of the latitude and longtitude of places. A large table of difference of latitudeand departure, for the exact working a traverse. Also the description and use of the sea-quadrant, fore-staff and nocturnal. The problems of plain-sailing and astronomy, wrought by the logarithms, and by Gunter's scale. A tide table. The courses and distances on the coast of Great Britain, Ireland, France, &c. and the soundings coming into the channel. With directions for sailing into some principal harbours. By Nathaniel Colson, student in the mathematicks.