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CaptainRamius · 10-16-14, 09:53 AM

If this will help, you can only use passive sonar effectively when you are below 5 knots. Any higher speed will make too much engine noise and you cannnot hear very much.

10-16-14, 09:53 AM	#11
CaptainRamius Sonar Guy Join Date: May 2014 Location: In shallow waters Posts: 388 Downloads: 19 Uploads: 0	Help If this will help, you can only use passive sonar effectively when you are below 5 knots. Any higher speed will make too much engine noise and you cannnot hear very much.