The sea-mans tutor, or, The marriners art made easie [electronic resource] : in two parts : the first teaching the principles of the sphear, wherein is handled the meaning of several words used in astronomie, and navigation : the second the practical part of navigation, wherein is shewed the making and use of the most principal instruments belonging to the sea-mans art : to wit, the astrolabe, cross-staff, and the annalemma, and the use of the sea-chart, and nocturnal : also rules for finding tides in any haven, the regiment of the sun, the finding the latitude either by the sun, or stars, the finding the variation of the compass, the finding the hour of the day, and night, in any latitude, to keep a traverse at sea, with many other rules and instructions, necessary for all sea men to know : whereunto is added tables ofthe suns declination for every day in the year, and tables of the latitude, and variations of the compass in most places in the whole world where navigation hath been used / set forth by the late famous mathematician Mr. Edward Wright, to whose memorie all ingenious and skilfull sea-men will acknowledge themselves for ever indebted.