Two years ago, a 40-foot double-hulled canoe called the Hokule’a left Honolulu on a round-the-world journey, logging over 150,000 miles using only the stars, wind, ocean currents and the movement of birds to set its course. On Monday afternoon the boat arrived on Martha's Vineyard, anchoring first in Menemsha Harbor, and then on Tuesday entering Vineyard Haven Harbor to mark its official stop here. After a three-day visit the Hokule'a departed Friday morning bound for her next stop just across the sound in Woods Hole.