Editing Tacking (sailing) (section)

=== Navigating ===
The bearing from a sailing craft's current location to a destination or racing mark that lies within the no-sail zone, may lie on one side or other of being directly upwind. The tack on that side is "favored", because the destination lies closest to the craft's highest point of sail—its "best course" is close-hauled on that tack. Wind shifts that improve the angle towards the destination are called "lifts"; those that increase the angle away from the destination are called "headers". A sufficiently large wind shift may cause the destination to lie on the opposite side of the direction from which the destination or mark lies and indicate a tack to the favored side—tacking on a header.<ref name = Royce>
{{cite book
 | last = Royce
 | first = Patrick M.
 | title = Royce's Sailing Illustrated
 | publisher = ProStar Publications
 | volume = 2
 | edition = 11
 | date = 2015
 | pages = 161
 | url = https://books.google.com/books?id=mtqgsWaWciMC&q=sailing+header+footer&pg=PA97
 | isbn = 9780911284072 }}</ref>