The world鈥檚 largest non-self-propelled cutter suction dredger, also known as the world鈥檚 largest cutter suction dredger, will feature gearboxes provided by NGC Marine used to transfer power for inboard dredge pump, underwater dredge pump, and underwater reamer. The dredger was designed by the Marine Design and Research Institute of Shanghai Jiao Tong University. It is now under construction by Jiangsu Haixin Shipping Heavy Industries Co., Ltd. The gearbox order was signed in March 2015, and two dredgers are involved.
The two 6,500 m3 dredgers will be equipped with 2 inboard dredge pump gearboxes, 1 underwater dredge pump gearbox and 1 underwater reamer gearbox. Input power of the inboard dredge pump gearbox will be 6,000 kW and the largest output torque will reach 197 kN.m. The underwater reamer gearbox offers dual input and single output, with the input power of 2 脳2,600 kW and the largest output torque of 180 kN.m. The unit can operate in up to 25 m of water with an inclination of 65掳. This is also true of the dual input and single output, with input power of 2脳2,600 kW and the largest output torque of 1655 kN.m. Weighing 220 t, it works with an inclination of 65掳. The NGC gearbox is anticipated to be delivered in October 2015.
For NGC, the successful signing of this order is the result of years of effort on the part of NGC personnel, and demonstrates the affirmation of markets and also represents the excellent recognition that the NGC brand has gained from its customers. This order shows that more and more ship owners and shipyards are choosing NGC鈥檚 gears to transfer power for dredgers, thereby strengthening the leading position of NGC in China鈥檚 dredger market. Ship owners have high expectations in terms of reliability and performance-price ratio for such important dredgers, and NGC has proven to its customers that it has the ability to meet such stringent demands. In the field of dredgers, NGC has already delivered 3,500 m3, 4,500 m3, 5,000 m3 and 6,000 m3 series driving gearboxes for cutter suction dredgers. As evaluated by the industrial experts and competent authorities, the JDTS1350 underwater reamer gearbox is recognized as the first set of heavy equipment in Jiangsu province, and this indicates that independent development in dredging equipment by NGC over many years has gained market recognition.
Upon delivery, the dredgers will be operated in the South China Sea and Middle Eastern waters.