Measurements of Hearing Acuity Among Submariners and Noise Levels in Working Compartments

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Abstract
To study the prevalence of hearing losses among submariners, a warble tone hearing test was given to 1053 submariners. Approximately 10% of all men tested had high frequency hearing losses of 18 db or greater (at 4000 and 7000 cps). A comparison of the hearing losses of enginemen to those of all others as a function of time on boat, for each frequency, showed that in general the enginemen had greater losses at all frequencies although there were minor reversals. The amount of loss was slightly less than expected from previous findings on industrial workers.

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