LOS ANGELES, Sept 25 (AFP) - A castaway sailor has been rescued by the US Coast Guard after surviving nearly four months adrift at sea in a crippled boat by drinking rainwater and roasting turtles and seagulls, rescuers said Wednesday. Vietnamese immigrant Richard Van Pham, 62, drifted for almost 4,000 kilometers (2,500 miles) after his 7.8 meter (26 foot) sailing boat got caught in a storm during what was supposed to have been a simple 35-kilometer (22-mile) pleasure cruise. The thin but healthy survivor, who set out from his home in Long Beach, California to the nearby resort island...