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RESULTS 
1. A submarine-mounted vertical array of thermistors for 
temperature measurements at several levels was designed, con- 
structed, and tested. 
2. The precision (repeatability), using probable error as 
criterion, is+0.0032°C. The accuracy (absolute) is +0. 003°C 
over the usable range. 
3. Data output is in digital form. 
4, The digital data are reduced to give depth of isotherms 
(i.e. , internal waves) as a function of position along the track. 
Techniques for accomplishing this with a high speed computer 
have been devised and tested. 
RECOMMENDATIONS 
Accord recognition to the importance of the submarine as a 
working platform for the oceanographer. Use a submarine, es- 
pecially during the season of well-developed thermoclines, for the 
study of internal waves. 
