Jiangsu Zhenjiang Shipyard has started construction of a dual-fuel port tug for Ningbo Zhoushan Port Co. The Chinese tug builder is building a Robert Allan RAstar 3800-DF design tug for completion in 2019.
It will be the fifth LNG-fuelled tug built in China, but the first dual-fuel azimuthing stern drive (ASD) model. It demonstrates the investment owners and port authorities are making in gas-fuelled tugs as China opens new LNG import terminals.
This tug will be powered by a pair of Niigata 8L28AHX dual-fuel engines, with each driving a Rolls-Royce US 255 controllable pitch Z-drive. During operations, gas will replace up to 90% of the fuel, reducing emissions of SOx up to 50% and NOx up to 80%. It will also lower particulate matter by 98% and CO2 by 22%, according to the shipyard.
When this tugboat is delivered, it will have a bollard pull of around 80 tonnes and LNG storage capacity of 55 m3, which gives it a range of more than 700 nautical miles in LNG mode, and nearly 1,700 nautical miles in diesel mode.
In July, Jiangsu Zhenjiang delivered a tug and launched the hull of another for outfitting. It delivered Fu Gang Tuo 1 to Fuzhou Port on 28 July. This is an ASD tug, designed by Jiangsu Zhenjiang with 4,420 kW of power.
On 2 July, the shipyard launched another ASD tug for a domestic shipowner with a total power of 3,240 kW, which is more powerful than an ASD tugboat Jiangsu Zhenjiang launched on 20 June, with 2,940 kW.
On 14 June, Jiangsu Zhenjiang delivered another ASD tug to the Qingdao Port operator. Qing Gang Tuo 2 was designed by the shipyard with total power of 5,120 kW. This followed a busy May, where the shipyard delivered Da Gun Lun 1, a 3,824-kW ASD tug, to Tianjin Lingang Shipping Co. It also launched a 4,420-kW ASD tug and a 3,676-kW unit, Gangxing Tuo 234 for Zhoushan Gangxing Towboat Co.
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