LOAD AS PERCENT OF AVERAGE BREAKING STRENGTH 

 50 



DACRON 

 NOLARO 



MYLAR 



40 



POLYPROPYLENE 

 DUO-SYN 



MAN I LA 



30 



NYLON 



20 



DACRON 



10 



10 15 



PERCENT ELONGATION 



20 



25 



Figure 6. Typical elongation in various ropes after first loading to 50% of average breaking strength (Written 

 communication from Columbian Rope Company). 



The Model A-393 and 855 Geodyne time re- 

 leases used in 1970 were checked for proper opera- 

 tion at room temperature in the laboratory on 

 CGC EVERGREEN. They were then operated 

 in the ship's refefer to simulate expected water 

 temperature ( ^ — ^0.0°C). One of the releases was 

 test fired on deck. 



AMF Model 242 acoustic releases were \ised 

 by IIPRS in 1971. Each release was completely 



tested prior to use in accordance with the pro- 

 cedures in the operation manual. Before use, 

 both acoustic releases were given an air acoustic 

 test at CGOU and again on the EVERGREEN 

 immediately before deployment. 



The arrays were assembled on the buoy deck 

 of EVERGREEN in accordance with a mooring 

 order established prior to the cruise. The moor- 

 ing order listed each component as it would ap- 



10 



