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    On 1^st December, 2021, two units of 3,680kw ASD tugboats, which are built for  Zhoushan Haitong and named “ZHOU GANG TUO 39”and “ZHOU GANG TUO 41”, have completed and delivered.
    The ship “ZHOU GANG TUO 39”has a total length of 39.975m, a width of 10.6m, a depth of 4.9m, bollard pull (stern) of 64t,  bollard pull (forward) of 58t, a an endurance of 1100nm and a speed of 13.24Kn.
    The ship “ZHOU GANG TUO 41”has a total length of 41.225m, a width of 11.5m, a depth of 5.3m, bollard pull (stern) of 86t,  bollard pull (forward) of 77.1t, a an endurance of 1100nm and a speed of 13.8Kn.