船舶里程怎么算

普通班已停航,旅游班:2天3夜,快艇12小时票价:一等舱二等舱三等舱四等舱快艇重庆785490219164350长江客班轮宜昌至各港票价表港口里程一等二等三等四等五卧散席重庆648KM￥785￥490￥219￥164￥125￥107长寿588KM￥667￥447￥204￥156￥117￥98涪陵528KM￥658￥412￥188￥141￥109￥90丰都478KM￥605￥380￥176￥134￥102￥88高镇457KM￥587￥368￥171￥130￥98￥86忠县409KM￥530￥334￥156￥118￥92￥80西沱370KM￥448￥308￥145￥112￥88￥76万县321KM￥444￥280￥134￥103￥80￥71双江291KM￥416￥263￥126￥101￥78￥69云阳266KM￥376￥238￥116￥91￥72￥66故陵245KM￥343￥219￥103￥87￥69￥61安坪225KM￥317￥204￥100￥83￥67￥60奉节202KM￥306￥196￥98￥79￥63￥56巫山167KM￥259￥168￥85￥70￥58￥52巴东110KM￥185￥122￥69￥56￥49￥43香溪76KM￥141￥102￥60￥52￥46￥41