The plan keeps the heading of the vessel close to mean mfh , and does not keeping controlling the sway direction and surge direction 该方法始终保持艏向接近平均最优艏向，根据纵向、横向偏差不完全控制纵向和横向，结果证明既相对最节省能量。
Secondly , for 74500dwt bulk carrier , the strength calculation and analysis of bottom structure in forward area , which bear big act force during ship launching , are carried out 其次，对船在下水过程中承受很大支反力的艏部区域底部结构进行了强度分析计算。
This vessel is made of steel , catamaran , fore raked stem , transom stern , round bilge , fore raised deck , single open deck , double main engines , double propellers , double rudders 本船为钢质双体船，前倾艏柱，方艉圆舭，艏升高甲板单层露天甲板，双主机双螺旋桨双舵。
Located on the dock near captain nemo s private submarine , the nautilus , this counter - service restaurant was designed for his crew to grab a quick bite to eat 停泊在热狗对面的这艏潜水艇鹦鹉螺号原本是水手们的食堂。在此您可一边享受大肉包啤酒等美味小吃一边眺望鹦鹉螺号。
The technique is independent from measurement values and mathematic formula of environment factors , combining the acquiring for mfh and control , attaining fast response and a high degree of accuracy 该方法不依赖于传感器对环境要素的测量，艏向寻优和控制向结合，响应速度快，准确程度高。
Because of the change of ship attitude ( rolling angle r , pitch angle p and course angle h ) led by ship rocked interference and windage , the los stabilization will be influenced obviously 由于舰船的艏摇、纵摇、横摇等引起舰船姿态的变化以及风阻力矩的作用，对跟踪系统的视轴稳定性产生明显影响。
This ferry has a raked forecastle , single deck and double bottom . six meter long x five meter wide steel ramps one each are arranged on bow and stern for cars roll - on roll - off longitudinally 本船具有前倾艏楼单层甲板双底，在艏艉部均设有6米长5米宽的钢质跳板,作为汽车上落通道，汽车可以首尾纵向上落码头。
The results of the analysis proved that the displacement , velocity , acceleration , bend and shearing force of ship ' s head and middle part were controlled effectively with active cable 通过对仿真结果的分析和研究，发现加上主动缆作动器后，可以有效地对船艏和船肿的位移、速度、加速度、弯矩和剪力实施控制。
This ship is a steel whole - welded shallow draft dredger for cleaning and dredging silt mud sand in inland rivers . it is of single deck , single bottom , transverse framing , transom stern and bow being snow - skid lines 本船为钢质全焊接结构浅吃水内河冲砂清淤工作船，具单甲板单底横骨架式结构，方艉，艏部为雪橇式线型。
