IN A SINGLE-SCREW CARGO SHIP. 



173 



I— 5- (for S.B.C. 0.532) 0.89 



(for S.B.C. 0.61 ) 0.90 



V (for S.B.C. 0.532) 14.67 



(for S.B.C. 0.61) 14.84 



I.T.^ 3.1 



I.H.P 4,880 



P.C 0.695 



E.H.P 3,392 



S.H.P 4,490 



Estimate of Performance. 



The agreement between the two power columns is so close that it appears to me Com- 

 mander McEntee has developed a method for obtaining quickly and cheaply all such data 

 as it has taken me years to collect and, from the data so obtained, not only to deduce abso- 

 lutely correct factors for propeller design but also to so classify hulls along such definite lines 

 that the performances of combined hull and propeller can be forecast with the minimum of 

 error. He is most heartily to be congratulated upon the results of his labors up to the pres- 

 ent time and I hope and trust that he has not yet reached the end of his investigations. 



The President: — Is there any further discussion on these two papers Nos. 9 and 10? 

 If not, we will ask the authors to close. 



Professor Sadler: — I would like to draw attention to the fact that Professor 

 Yamamato, of the University of Tokio, had a good deal to do with the experiments here 

 presented. I was called away before these experiments were quite completed, and I think 

 our thanks are also due to him for the very careful way in which these experiments were 

 conducted after I left the University of Michigan. 



Commander McEntee: — Referring to Admiral Taylor's remarks, no attempt was 

 made to find the most efficient propeller for each model. There was time available to make 



