The problem is the amount of materials needed to build something are greater than the amount of materials in the finished product. Further more standard displacement is more than the weight of the ship. See:nebelwerferXXX wrote:When building a ship, you need the 'requirements for the materials', and after the ship is already completed, you have the total of all the materials in a finished product of a completed ship in 'standard displacement' in tons.lwd wrote:Why do you think there is a one to one correlation between "ship building materials" and standard displacement? Of what value is such a nebulous term in any case?
http://en.wikipedia.org/wiki/Displacement_(ship)