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There are two types of SONAR (Sound Navigation and Ranging) used...active and passive.
Passive SONAR is simply listening under water using hydrophones. With passive SONAR a vessel can determine the bearing (direction) of whatever is creating the noise right away. Using triangulation (multiple bearings at timed intervals) passive SONAR can now determine range, bearing, and speed. But this can be time consuming.
Pro - stealth
Con - time consuming
Active SONAR requires emitting a noise underwater that is on multiple frequencies. Not just a single loud 'ping' like in the movies. As the sound reaches an object underwater the noise bounces back to the vessel that emitted the sounds. Sounds travel at given speeds, and using a calculation you can almost immediately determine range along with bearing. A second quick active SONAR burst and you now have speed. But, now everyone listening knows you are there as well.
Pro - quick results
Con - exposes yourself
What else can I help you with?
How do you use sonar in a sentence?
Scuba Divers use a Sonar to find treasure or a hidden ship.
How does a ship find its location?
Sonar
What is the explanation for the working and principal of sonar?
sonar consist of a transmitter and a data and it is installed in a boat or a ship
Who was the first person to use sonar in the navy?
Most likely it was some unknown bosun's mate that worked in the sonar lab at the Navy Bureau of Ordinance.
Does the Arctic fox use sonar?
No, the Arctic fox does not use sonar. It is not equipped with sonar.
Do boats use sonar?
Do boats use sonar. Yes they do.
How do dolphins hear underwater?
they use SONAR. :)
How do use sonar in a sentence?
We can use sonar to map the lake's floor.
Does a ship have a sonar?
Most modern combat Navy surface vessels have Anti-Submarine Warfare (ASW) sonar arrays of some type, and at least 1 Aircraft Carrier does as well (newer carriers use their escort vessels for ASW sonar screens). Essentially, that comes down to Cruisers, Destroyers, and Frigates, which make up the bulk of a Carrier Battle Group or Task Force screen to protect the Carrier from submarine threats. However, those ships, as well as Carriers, also use fixed and rotary wing aircraft with deployable (dipping) and expendable (sonobuoys) sonar as well. Ship sonar systems include the main forward sonar arrays, as well as deployable Variable Depth Sonar (VDS) towed sonar systems.
What is included in the product group Sonar Systems?
airborne, surface ship, and submarine-based sonar systems including depth-finding equipment, guidance hydrophones, sonabuoys, sonar fish finders, navigation and mapping sonar, and anti-submarine sonar equipment
German research ship that studied the ocean durinning the 1920s?
sonar
What would be useful in locating a sunken ship at the bottom of the ocean?
Sonar
