Quote:
Originally Posted by edjcox
The sonar had the ability to be used as a means of communications. Using encrypted or standard morse simple messages could be sent sub to sub or sub to surface ship equipped with standard sonar reciever of the day.
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I thought that might be what it was for. I've read about the radar being used for communications, but I hadn't seen reference to the sonar being used in such manner. Do you have any source that describes this?