Traiisacfioiis Socirty Xmal Architects and Marine Engineer!;, I'ol. 2"^, iQig. 



Plate 3 I 



To illustrate paper on "The Propulsive Efficiency of Single Screzv, Cargo Ships." 

 h\ Commander William McF.ntcc, Construction Corps, U. S. N.. Member. 



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NORRIS PETERS INC., LiTMO.. WA5M:MGT0N, &. C. 



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SPEED IN KNOTS 



