ELI5: Explain Like I'm 5

Submarine signals

Hello there, kiddo! Today we are going to learn about submarine signals!

Submarines are special boats that can go underwater. When submarines are underwater, they can't use normal communication methods like talking or texting. So, they use a special type of signal called sonar.

Sonar stands for Sound Navigation And Ranging. It's like an underwater phone call, where the submarine sends out a sound wave and listens for echoes. The sound wave bounces off objects in the water and sends back an echo to the submarine. This helps the submarine see what's around them, even when they can't see it with their own eyes.

Sometimes submarines use this sonar signal to communicate with other submarines or ships. They can send messages to each other by changing the frequency or the timing of the sound waves.

Submarine signals are very important because they help submarines be safe and avoid crashing into things underwater. They also help submarines stay hidden from other boats or enemies.

So, there you have it, kiddo! Submarine signals are underwater phone calls that submarines use to see what's around them and communicate with each other. It's like their own secret code!