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



Plate JO. 



To illusfrafe paper on "Recent Progress zvitli the Active Type of Gyro-Stabiliccr for Sliips," 



by Elmer .-I. Sperry, Esq., Member. 



Fig. 1. — The Widgeon. 



Fig. 2, 



Fig. .3. 



