Sonar
Boats typically use sonar technology to locate objects underwater. Sonar systems emit sound waves that travel through the water, bounce off submerged objects, and return to the source, allowing the operator to determine the object's distance and size. Additionally, some boats may employ underwater cameras or remotely operated vehicles (ROVs) for more detailed exploration. These tools are essential for navigation, fishing, and underwater exploration.
Boats,ship,gravels.etc.
Echo location: You send out a directional high frequency sound. The sound bounces back in a slightly different way and at a slightly different time from different objects at different distances. You detect the differences with your Echo Locator device and that's how you can locate where objects are and how far away they are. Examples: Its how SONAR on a Navy Destroyer or Helicopter SONAR Pod detects submarines under water. Its how a fishing boats "Fish Finder" works. (A kind of SONAR) This is how BAT's fly at night or in the dark. (Very high pitched squeaks) Its how Dolphins locate prey to eat and how they detect things in murky water.
Ships, boats, anything buoyant, really...
A fishing boat using sonar to locate fish is employing reflection. The technique that uses sound propagation to detect objects under the water.
It's simply a matter of the nation's particular language. For example, in France the musket was called a "fusil"; Englishmen called "fusils" muskets. English speaking people called under-water boats submarines, non-English speakers called subs under-sea boats (or under-water boats). The letter "U" is simply short for "Under-Sea" (or Under-Water).
The best way to build waves in the water is to run objects through it. Boats often create waves in the water.
US PBYs and escort carriers were able to locate and destroy enemy subs in the Atlantic.
a system that detects submarines (under water boats) a sonar
If it floats above or under the water, the SEAL's ride in or on it.
Torpedoes did the damage; under-water damage, the worst kind of damage for anything floating on water.
Yes, monsters live under the water and kill people in boats.