Transactions Society Naval Architects and Marine Engineers, Vol. JJ. 1015. 



Plate 13. 



To illustrate discussion by H. DcR. Parsons, Esq., on paper entitled 

 "Aerodynamical Experiments upon a Yacht's Mainsail," by Professor H. A. Everett, Member. 





Sec fro /^ A-t^ 



•«^pi«^^ 





rramt 'A' 



Frame '8' 



