My morning watch began the way it had all summer. At 03:56 a.m., I stepped into the wheelhouse of the MV David B and wrote in the logbook: August 10, wind calm, depth 110 feet, barometer 1012. Comments: rain and fog. Then I walked back to the galley, turned off all the lights, save one dim lamp under a cabinet. Outside, rain hammered the aluminum overhead. White, jagged waterfalls cut through fog and darkness like silver lightning as they cascaded down the sheer 3,000-foot cliffs.