Sectional area curve, you know this, are you aware what is a sectional area curve, are you
aware, yes or no? If you are not aware, I will have to draw it for you. This is the forward
perpendicular of the ship, this is the aft perpendicular of the ship, and somewhere here is the
mid ship let us say, here is the mid ship. So, I know if I draw this, this is length dimension
and this is sectional area- you know what is sectional area, no, area of the section- if I draw
this curve, then here will be the mid ship, mid ship section is so much, a mid ship, which we
have talked in the previous hour, and it may be zero a little aft of AP if my transom or the
stern is immersed in AP, then, AP is at the rudder stock there may be some portion still to the
aft, so at somewhere here it will become zero.