The Coast Guard launched a second H-C-130 Hercules aircraft at first light Wednesday to continue the search for a 34-year-old cruise ship worker who jumped from the vessel Monday.  The Grand Princess was on the third day of a 15-day voyage to the islands, when the crewmember, described as a Filipino national, was caught on the ship's closed circuit video system jumping from the vessel.  The ship was about 1,100 miles from Hilo at the time.  The Grand Princess was supposed to dock in Hilo today and make several port calls here before returning to San Francisco on January 19th.  So far, there's been no sign of the crewmember.