Jim Lynch's fourth novel is his long-awaited breakthrough--a grand saga of a sailing-obsessed family that can stand alongside Ken Kesey's Sometimes a Great Notion.Joshua Johannssen has spent his whole life among sailboats. His grandfather--Grumps, a.k.a. Bobo Sr.--famously designed them, his father--Bobo Jr.--raced and built them and his mother--enthralled by Einstein and mathematics--knows exactly how and why they work, or not. For Josh and his siblings, the Puget Sound is