Page 



REPLY TO DISCUSSION 578 



Thomas G. Lang, Naval Undersea Research 

 and Development Center, San Diego, California 



DISCUSSION 579 



Christopher Hook, Hydrofin, Bosham, Sussex, 

 U. K. 



REPLY TO DISCUSSION 580 



Thomas G. Lang, Naval Undersea Research 

 and Development Center, San Diego, California 



PROPELLER EXCITATION AND RESPONSE OF 230 000 TDW 

 TANKERS 581 



C.A. Johnsson, The Swedish State Shipbuilding 



Experimental Tank, Goteborg, Sweden and 



T. S^ntvedt, Det norske Veritas, Oslo, Norway 



DISCUSSION 655 



William B. Morgan, Naval Ship Research and 

 Development Center, Bethesda, Maryland 



REPLY TO DISCUSSION 656 



Carl-Anders Johnsson, Statens Skeppsprovnings - 

 anstalt, Goteborg, Sweden 



DISCUSSION 658 



Marinus Oosterveld, Netherlands Ship Model 

 Basin Wageningen, Netherlands 



REPLY TO DISCUSSION 659 



Carl-Anders Johnsson, Statens Skeppsprovnings - 

 anstalt, Goteborg, Sweden 



DISCUSSION 660 



Edmund V. Telfer, R.I.N. A., Ewell, Surrey, 

 U.K. 



REPLY TO DISCUSSION 660 



Carl-Anders Johnsson, Statens Skeppsprovnings - 

 anstalt, Goteborg, Sweden 



DISCUSSION 661 



Harrison Lackenby, British Ship Research As- 

 sociation, Wallsend, Northumberland, U. K. 



REPLY TO DISCUSSION 661 



Carl-Anders Johnsson, Statens Skeppsprovnings- 

 anstalt, Goteborg, Sweden 



