Define sound velocity, and describe the effect of temperature, pressure, and salinity on sound.

Explain why sound propagates along more or less curved paths, and describe the five basic sound ray patterns and their attendant temperature and sound velocity profiles.

Differentiate between active and passive sonar, define the two modes of active sonar search, and describe the propagation paths used with each mode.

Define and differentiate between the elements used in the active and passive sonar equations.

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