船舶横移运动的操作及转心位置变化规律的探讨

The Principle of Ship's Transverse Motion and Its Application in Ship Handling

通过对几种船舶横移运动的操纵方法与理论研究，得出结论：船舶操纵中横移运动与转心位置变化规律的关系，即在航船舶的转心位置与流速和船首转向有关，不论船舶上、下水航行，只要航速相等或接近相等，当船首顺流转向时，转心后移；船首逆流转向时，转心前移。这一规律在船舶系离泊与避碰操纵中应充分应用。

ship handling is a very complicated work requires ship operators to have a good seamanship. The paper presents some theroretical results on ship's transverse motion and introduces several ship handling mothods. It concludes that the transverse motion in ship handling is related to the change of pivoting point. The position of the ivoting point of a ship is determined by current speed and turning direction of the ship bow toward current. Whether the ship is running upbound or downbound. as long as the ship's speed is the same (or almost the same), the pivoting point will move afterwards when the ship turning downstream. and forewards when the ship turning upstream. This principle conld be used in lerthing alongside, leaving a berth and ship handling to avoid collision.