计算各断面在各吃水﹑各横摇角状态下附加质量对吃水之斜率(dy.out)以 及对横摇角之斜率(dx.out)。-Calculated for each section in each draft ﹑ each roll angle of the slope of the draft status of the additional mass (dy.out) and the roll angle of the slope (dx.out).