From Modern Day Pirate Tales:
"Yesterday saw a dramatic incident in the Gulf of Aden, during which a Chinese vessel was boarded by at least seven pirates pirates. But rather than surrender to the attackers, the crew of the Zhenhua 4 barricaded themselves inside their vessel and used whatever they could find to fend off the pirates during the five-hour ordeal."Read the rest here "Pirates and Peace Keepers"
Fred Fry had this covered at On Defending Unarmed Merchant Ships Against Pirates