merchant ship forms, and appointed a Panel to select the pattern and range of parameters to 

 be used in the work.* The methods of deriving the parent lines and presenting the data were 

 developed at the Model Basin, and the experiments were carried out there as part of the 

 Bureau of Ships Fundamental Hydromechanics Research Program during the years 1948-1960. 



At the time of the inception of this project, there was beginning a great upsurge in the 

 provision of hydromechanic research facilities all over the world, with the certainty that in 

 consequence many programs of research into hull form, in smooth water and in waves, would 

 be initiated. One of the objects of Series 60 was to provide a parent family which, within the 

 type of ship covered, could serve as a starting point for any such work, so that new series 

 might be related one to the other by having a common datum line. Considerable success has 

 been achieved in this way, and parents of the series are being used for research into sea- 

 going qualities of ships, both under ATTC and International Towing -Tank Conference (ITTC) 

 sponsorship. Other examples include methodical launching calculations, the effect of bulbous 

 bows on power, the estimation of propeller forces acting on a ship's hull and shafting, and the 

 representation of ships' lines by mathematical methods. 



The results of the model experiments have been published before the SNAME from time 

 to time to make them available to the profession as soon as possible; this led inevitably to 

 some duplication and the occurrence of a number of minor errors. In the discussions on these 

 papers, a number of requests have been made that the results be brought together in a single 

 publication. In carrying out this suggestion, much of the preliminary work has been omitted 

 since it did not have any bearing on the ultimate results. Readers who are interested in 

 these historical and development phases of the Series can find a full account in the individ- 

 ual papers. For convenience, these are listed separately on page R-5 immediately following 

 the list of specific references. 



* The membership of the Panel is given in the Foreword. 



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