摘要
在整理分析有关船模试验资料之后，提出了估算船舶横流阻力系数的近似公式，与实船试验结果比较，能较好地吻合。在此基础上，试算了超大型船靠离码头所需拖轮力的大小，并分析了风、浅水等对靠离力的影响，对操船人员安全、经济靠离码头有一定的参考意义。
When handling a VLCC to get alongside or leave a wharf,the navigator should well knowhow much tug force are needed.Presently,it is estimated according to V LCC’s DWT. butthe error is too big·We believe that the key way for resoving this problem is to get the accu-rate cross flow drag coefficient C_(wy) which is varied with the ship’s particulars. Unfortunately,many researchers take it as constant. In this paper.a practical formula for calculating C_(wy) pre-sented based on 12 ship model experiment data.With this formula,tug force needed by VLCCin berthing manoeuver in different conditions is calculated。
