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4 



I SEMI- SUBMARINE > 



Fig. 1 - Ship forms for high speed at sea 



The Third Symposium was a major impetus which propagated substantial 

 investigative work into the performance of these unusual ship forms. The Bu- 

 reau of Ships and the Office of Naval Research supported an extensive program 

 to obtain information concerning the performance of these unusual ship forms. 

 A substantial investigation of the characteristics of the Shark Form was con- 

 ducted at the Massachusetts Institute of Technology by Professor Mandel [5] and 

 his associates in a relatively low speed range. It gives us pleasure to say that 

 a substantial amount of work was done at our own Davidson Laboratory on the 

 Semi-Submerged Ship [6], the Large Bulb Ship [7] and the Hydrofoil Semi- 

 Submarine [8]. Professor Mandel [9], acting as a consultant and member of the 

 Panel on Naval Vehicles of the National Academy of Sciences' Committee on 

 Undersea Warfare, published a primarily analytical, exhaustive comparative 

 study of novel ship types from which we will draw from time to time. It is of 

 general interest to note at this point that Professor Mandel's study of endurance 

 and pay load indicates that the pay loads for all of the ship types that we will 



718 



