DISCUSSION 212 



H. Lackenby, British Ship Research Association, 

 London, England 



DISCUSSION 213 



W. A. Swaan, Netherlands Ship Model Basin, 

 Wageningen, Netherlands 



DISCUSSION 214 



L. Vassilopoulos, Massachusetts Institute of 

 Technology, Cambridge, Massachusetts 



REPLY TO THE DISCUSSION 217 



E. V. Lewis, Webb Institute of Naval Architecture, 

 Glen Cove, Long Island, New York 



THE DISTRIBUTION OF THE HYDRODYNAMIC FORCES ON A 



HEAVING AND PITCHING SHIPMODEL IN STILL WATER 219 



J. Gerritsma and W. Beukelman, Technological University 

 Delft, Netherlands 



DISCUSSION 247 



E. V. Lewis, Webb Institute of Naval Architecture, 

 Glen Cove, Long Island, New York 



DISCUSSION 248 



J. N. Newman, David Taylor Model Basin, Washington, D.C. 



DISCUSSION OF THE PAPERS BY GERRITSMA AND 



BEUKELMAN AND BY VASSILOPOULOS AND MANDEL 249 



T. R. Dyer, Technological University, Delft, Netherlands 



REPLY TO THE DISCUSSION BY E. V. LEWIS 250 



J. Gerritsma and W. Beukelnnan, Technological University, 

 Delft, Netherlands 



REPLY TO THE DISCUSSION BY J. N. NEWMAN 251 



J. Gerritsma and W. Beukelman, Technological University, 

 Delft, Netherlands 



A NEW APPRAISAL OF STRIP THEORY 253 



L. Vassilopoulos and P. Mandel, Massachusetts Institute of 

 Technology, Cambridge, Massachusetts 



DISCUSSION 356 



Winnifred R. Jacobs, Stevens Institute of Technology, 

 Hoboken, New Jersey 



DISCUSSION 360 



M, A. Abkowitz, Massachusetts Institute of Technology, 

 Cambridge, Massachusetts 



DISCUSSION 364 



O. Grim, University of Hamburg, Hamburg, Germany 



DISCUSSION 364 



W. R. Porter, Massachusetts Institute of Technology, 

 Cambridge, Massachusetts 



DISCUSSION A— THE INFLUENCE OF THE ADDED MASS 

 FORMULATION UPON THE COMPUTER MOTION 



PREDICTIONS 366 



P. A. Gale, Bureau of Ships, Washington, D.C. 



DISCUSSION B — THE PITCH AND HEAVE OF TEN SHIPS OF 

 DESTROYER-LIKE FORM IN REGULAR HEAD WAVES- 

 COMPUTER PREDICTIONS COMPARED WITH MODEL 

 TEST RESULTS 368 



P. A. Gale, Bureau of Ships, Washington, D.C. 



vi 



