1. SONAR (SOund Navigation And Ranging)
Youjin Lee
Nicole Park
Joanne Lee

2. SONAR
A device utilizing sound to determine the range and direction to an underwater object.
Used on ships to measure depth of water
Detect large concentrations of fish or large objects underwater

3. How does it work? Sends a pulse Time of the echo’s return is measured
Can calculate the distance travelled by knowing the speed of sound in water
Bats and whales use the same method to sense their surroundings

4. Benefits/Drawbacks Benefits Drawbacks
Detect/prevent possible dangers underwater
Used on ships, naval vessels, submarines
fish finding
searching for shipwrecks
probing harbors where visibility is poor
oceanography studies
searching for underwater geological faults
mapping the ocean floor.
Military usages
No major drawbacks, except when your military enemy is using it against you