Michael Hurley watched his world unravel in the wake of infidelity, divorce and failure. In August 2009, he was short of money, out of a job, and seeking to salvage a life that had foundered. Deeply in need of perspective, he took to the open seas in a 32-foot sailboat, Gypsy Moon. The story of his 2-year outward odyssey, deterred by rough weather and mechanical troubles, combines keen observation, poignant thoughts, and deeper introspection with...