在以往的研究中,不少人得出以下结论: 航道过水断面与船舶横中剖面之比n绝不能低于7; 在过水断面相同的一些运河中,以具有水深最大断面为最有利。至于断面形状,在具有相等的过水断面面积和平均水深相等的断面形式中,矩形断面为最有利; 水深与船舶吃水之比不应低于1.5; In previous studies, many people reached the following conclusions: The ratio of the cross-section of the waterway to the mid-section of the ship must not be less than 7; in some of the same cross-section canals, the section with the largest depth of water is the most favorable . As for the cross-sectional shape, the rectangular cross-section is the most advantageous in cross-sectional forms with equal cross-sectional area and average water depth; the ratio of water depth to draft of the ship should not be less than 1.5;