The International Maritime Bureau says that more than 20 sailors were killed by pirates in 2003 – twice as many as the previous year. Seventy are missing, presumed dead. The Malaysian based organisation says piracy is increasingly becoming an Asian problem, with Indonesia the most dangerous area.

South and East Asia recorded twice as many as the rest of the world put together. More than a quarter of the world’s piracy took place in Indonesian waters, and without action from the Indonesian Government, the figures will not drop, the board said. Bangladesh is also a piracy hot spot where incidents almost doubled last year over 2002. Nigeria, Vietnam and India all have serious problems.

Other trends are also emerging: ships are now less likely to be hijacked for their cargo; attackers, possibly from militant groups, are seizing ships and ransoming their crew. Another concern is that oil tankers have become a common target and security experts fear a tanker could be used as a floating bomb to attack a city.