So, we had a number of series start

So, we had a number of series starting with the Taylor series and later modified to what is

called Taylor-Gertler series, these are basically v form ships for high speed operation used

mostly in naval vessels, to date. Till now, the naval vessels are built very near the Taylor-
Gertler series where the speed requirement is high, and you can get a really good prediction

of resistance and also get a hull form. But this is not very useful for merchant ships for the

reasons already we have discussed, resistance is high, naval vessel use it because they operate

normally in two or three speed conditions, a sprint speed, then a normal this thing, but

merchant ship do not work like that.