Pirate attacks more than doubled in Indonesia in the first nine months of 1999, prompting the International Maritime Bureau (IMB) to warn mariners to take urgent precautions in Indonesian waters. The number of actual and attempted pirate raids worldwide surged by more than 25 percent to 180 in the first three quarters of 1999, up from 143 in the same period in 1998, the IMB's Piracy Reporting Center in Malaysia's capital said in a report.