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Sonar is a way of communicating, navigating, and detecting objects by using sound propagation. For the remainder of this lesson, we will focus on underwater sonar, which is used by submarines and some aquatic animals to perform the previously mentioned tasks.
sonar is, was invented and developed as a direct conse- quence of the loss of Titanic in 1912, where the basic requirement was to detect icebergs in 2 miles distance.