sway direction meaning in English

横荡方向

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。
When keeping mfh , the force acting on the vessel in the sway direction is lest , this will be of great importance for saving on energy . a technique of searching for mfh based on fuzzy logic is brought up , which adjusts the heading according to the lateral movement of the vessel
由于在最优艏向上横向受力最小，对于节省侧推功率具有很重要的意义，所以本文又提出了一种基于模糊逻辑的、根据横向运动进行的自动艏向寻优方法。