NAVIGATING BY ZENITH STARS:
Zenith stars for an island are those which seem to pass directly overhead. Such stars also appear to pass directly overhead on the same latitude at any position east or west of the that island. On north-south courses, a navigator who kept upwind of his destination until its zenith star was overhead could then turn downwind to make a landfall, The range of visual sighting could be broadened by taking wide tacks downwind. Höküle'a (Arcturus) is a zenith star for Hawai'i Island. A'a (Sirus) is a zenith star for Tahiti and Fiji.