Sec. 63.8 BASIC DESIGN FACTORS 445 



thinking and experience, usually succeeds in do something which you desire. It will do what 



finding some ship owner or ship operator who is it wants to do, and that only, in accordance*with 



willing to back his engineering judgment. the laws of its behavior. 



In this quest for improvement the designer does Another excellent guiding rule for future 



well to heed the caution expressed by G. Nowka hydrodynamic ship design, formulated by a ship 



in his "New Knowledge on Ship Propulsion" of operator on a basis of economics and experience, 



1944 [BuShips Transl. 411, Apr 1951] when he says that: 

 says "The principal guiding rule in shipbuilding 



must read: Do not interfere with the laws of hydro- "^°°'' hydrodynamic features incorporated into the 



dimnmic^ " design of a ship cost nothing originally but afford benefits 



^ . ■ to the owner and operator which last forever" [Lowery, R., 



Put m another way this means: Do not try to SNAME Spring Meeting, 1956, in comments on Vincent 



tell the water what it has got to do or to make it paper]. 



