Acknowledgements 



This section supplements a corresponding sec- 

 tion on Acknowledgements in Volume I, to be 

 found on pages vii-xi of that volume. 



The author takes this occasion to express his 

 appreciation to a number of his associates and 

 friends who have been most helpful in the prepara- 

 tion of Volume II. Listing their names and accom- 

 plishments briefly : 



Mrs. Claudette Leveque Horwitz, of the 

 author's staff, especially for her invaluable help 

 in preparing the three sets of indexes for each of 

 Volumes I and II 



Mr. W. C. Suthard and the staff members of 

 the Photographic and Reproduction Division of 

 the David Taylor Model Basin for taking the 

 model and flow photographs of TMB models 

 reproduced throughout this volume; Mr. G. R. 

 Stuntz, Jr. and Mr. M. S. Harper of the Ship 

 Powering Division of the TMB Hydromechanics 

 Laboratory for finding them among the vast 

 assortment on hand at Carderock 



Mr. Werner B. Hinterthan, of the TMB staff, 

 who translated many of the titles in the German 

 references listed in the present volume, and who 

 helped the author find many German technical 

 references 



Miss Margaret M. Montgomery, for her 

 cheerful and ever-ready help in finding books for 

 the author and in guiding him around the TMB 

 library 



Mrs. Ruby S. Craven, head of the Aero- 

 mechanics Laboratory library at the David Taylor 

 Model Basin, for her assistance in looking up 

 many references in aerodynamics and aeronautical 

 engineering 



Mr. C. A. Ryman and other members of the 

 staff of Propellers and Shafting, Bureau of Ships, 

 U. S. Navy Department, for calculating the 

 weight of the screw propeller designed for the 

 ABC ship in Chap. 70 of this volume 



Dr. Hans F. Mueller, for his help in furnishing 

 valuable information in the rather limited field 

 of rotating-blade propellers 



Mr. William H. Taylor, managing editor of 

 Yachting magazine, who has gone out of his way 

 to render as.sistance to the author where informa- 

 tion from small craft would be of value 



Dott. Ing. Emilio Castagneto, Superintendent 

 of the Rome Model Basin (Vasca Navale; 

 Instituto Nazionale per Studi ed Esperienze di 

 Architettura Navale), for assistance in furnishing 

 information concerning models tested in that 

 basin. 



In particular, the author wishes to express his 

 appreciation for the useful ideas and information 

 found in a number of Russian technical books 

 written during the past decade. The Russian 

 titles and Russian authors of these books are 

 listed throughout the text wherever direct 

 references are made to them. 



In over four decades of experience while 

 working with others, the present author has been 

 blessed with constant and heart-warming coopera- 

 tion to an unexpected degree. Nevertheless, he is 

 compelled to take this occasion to express his 

 admiration and gratitude for a superlative 

 measure of cooperation in the printing and en- 

 graving projects on this book. Mr. Richmond 

 Maury, Mr. W. W. Tompkins, Mr. David G. 

 Wilson, Captain Horace F. Webb, Mrs. Janet 

 Jones, Mr. Orvrille W. Harrell, Mr. Henry F. 

 Drake, Jr., Mr. John L. Moore, Mr. Stuart M. 

 Holmes, Mr. Raymond C. Jones, and other staff 

 members of The William Byrd Press, Inc., of 

 Richmond, Virginia, designers and printers of 

 the book, as well as Mr. Jay R. Golden, of the 

 staff of the Industrial Engraving Company, 

 Easton, Pennsylvania, have contributed with 

 their efforts and their talents a friendship that 

 will always be treasured. 



Every reference inserted in the text of the book 

 "is intended as a tacit acknowledgement of assist- 

 ance rendered by the author, book, publisher, or 

 organization mentioned in that reference. The 

 present author and The Society of Naval Archi- 

 tects and Marine Engineers are grateful for 

 permission to make quotations from and adapta- 

 tions of material developed by others, whether 

 published or unpublished. Specific acknowledge- 

 ments are made in the cases listed hereunder. 



The reproductions in Sees. 18.3 and 18.4 of 

 Chapter 18 in Volume I, of John Scott Russell's 

 admirable drawings of a boat running in confined 

 waters, from the Transactions of the Royal 



