In this day and age of scanning sonar, side-imaging sonar, down-imaging sonar, high CHIRP sonar and so on, it is tempting to ignore the fundamentals of sonar, switch on a $4,000 to $5,000 sonar unit, ...
Three new wrecks have been found in the bottom of Lake Minnetonka through a side and down imaging sonar survey completed by Maritime Heritage Minnesota, and there may be more. So far, MHM surveyed ...
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