Certain errors in navigation detected and corrected by Edw. Wright ; with many additions that were not in the former editions.
Wright, Edward, 1558?-1615.

CHAP. XV. Of the Horizon.

THe Horizon is a Circle which divideth that part of the Heavens which we see from the residue which we do not see: and it is properly that Circle by which, according to our sight, the Heaven seemeth to be joyned with the water, when we are at Sea, without sight of any land. This Horizon is of two sorts, namely, right and oblique. The right Horizon is that which they have that live under the Equinoctial, which passeth by their Zenith; and therefore the Equinoctial line or circle falleth perpendicularly and right acrosse with their Horizon, and both the South and the North Poles are in their Horizon. The oblique Horizon is that which they have that live not directly under the Equinoctial; for unto them the Equinoctial divideth the Horizon obliquely, and not right acrosse: and one Pole is alwayes above their Horizon, and the other is beneath their Horizon, and cannot be seen. This Horizon is represented in the Sea-Chart by a certain imagined circle, whose center is the point where our ship is From which center are imagined to pro∣ceed unto the said circle 32 lines, which represent the 32 winds or rumbs; which alwayes are drawn in our Sea-Compasse: which Page  10 likewise in a little peece of paper doth continually represent unto us, both by day and night, the whole Horizon, with his 32 di∣visions.