China launched Asia's largest cutter suction dredger on November 3 at the port of Nantong, east China's Jiangsu Province, marking a big stride forward in the country's building of dredgers. The dredger, "Tiankun," is 140 meters long and 27.8 meters wide. It can smash underwater rocks, suck out sand, water and squirt to as far as 15 km at a speed of 6,000 cubic meters per hour. It is the currently the best in Asia in terms of efficiency and capacity.