Transactions Society Naval Architects and Marine Engineers, Vol. 2i, 1913. 



To illustrate paper on "Resistance of Bilge Keels' 

 by Professor C. H. Peabody, Member of Council. 



Plate 18. 



10 



40 



60 



HE NORRis ^Eiwms CO.. Washington, d. c 



100 120 140 160 180 



SCALE FOR REVOLUTIONS PER MINUTE. 



220 



140 



260 



280 



