On April 10, 2020, fifth patch of one unit of boat, named “YI TUO 104”, which belongs to engineering vessels for Guinea Al-project, was smoothly sailing.
    The total length of the pusher is 37m, type width of 10.2m, type depth of 4.5m, design draft of 3.532m, speed of 13.79kn, bollard towing force of 52t，backward towing force 47t.