So, one of the methods of estimating resistance is so called series ship method, let me explain
what it is. If I have ships of the of the same family that means, I define a ship, ship shape in a
particular manner, like I can say my fore body will have v form, aft body will have cruises
stern, etcetera. By some means I define a shape and try to generate more forms using that
family, that ship, as the basis. That means, I can broaden the ship only- not increasing the
length- use the scale and broaden the shape, or I increase the block by distributing the area
equally over the entire length or in a particular manner over the entire lengths, so sections get
full, if I am making a higher CB ship, then section gets full in a gradual manner, then I can
call that ship to be of the same family as the original ship; that means, I have a parent ship or
a number of parent ships and I generate from this parent ship more ships- do you understand
what I am saying, can you understand?