Pirates boats are seen nearby the Chinese ship ``Zhenhua 4`` in the Gulf of Aden, December 17, 2008 in this handout photo. The Chinese ship escaped pirate hijack in the Gulf of Aden after the crew fought for four hours with the help of a multi-coalition force. Nine pirates armed with rocket launchers and heavy machine guns boarded the ship. The 30 crew members locked themselves in their accommodation area, using fire hydrants and firebombs to prevent the attackers from entering, said an official w