Newman 



02s 



030 035 



040 



Fig. lb Wave pattern resistance 



puter program which analyses the tapes as punched by the recording 

 digitizer. The probes themselves are as described in Ref. 4. The 

 computer program uses the Matrix method of analysis developed 

 with this application in view and described in Refs. 4 and 5. It works 

 by a least square fitting of an appropriate function to the wave sur- 

 face defined over a suitable grid of positions. 



Some sample results for a 20 foot naodel of one of the trawler 

 type nnodels tested by Everest (Ref. 3), are shown in Figs. 2 and 3. 

 Fig. 2 is a copy of part of a computer output. At the top a tabulation 

 defining the wave ordinates Z(X ,Y ) 'as measured' by listing R, 

 Xp, Yp and Z (R is a serial number, Xp, Yp are longitudinal and 

 transverse coordinates respectively in feet, and Z is the wave 



542 



