China's large buoy working ship Xiangyanghong 22 was delivered to the East China Sea Branch of the State Oceanic Administration in Shanghai Tuesday. Built by the China State Shipbuilding Corporation Limited, the ship is China's first 3,000-tonnage buoy working ship. It is able to hoist and hold large marine monitoring buoys with a diameter of 10 meters. After delivery, it will help expand the scope of China's ocean observation and improve the country's global ocean observation level.