TRANSDUCERS 



SOFT SOLDERED 

 l^-SPOT WELDED 



SECTION A-A 



SOAB RUBBER BLOCKS 



Figure 1. Schematic of preliminary watertight cavity. 



TRANSDUCERS 



GLASS 

 "PROBE 



ALUMINUM ANGLES 



Figure 2. Schematic of final cavity design. 



Five different box cavities with welded corners were 

 constructed. The dimensions (all in inches) are as follows: 







Length 



Width 



Depth 



No. 



1 



17 



11 



14 



No. 



2 



12 



8 



10 



No. 



3 



8* 



5* 



7 



No. 



4 



6 



4 



5 



No. 



5 



4^ 



2^ 



^4 



3* 



Cavity No. 2 was used almost exclusively during the 

 data collection. 



15 



