Navigation is a technique for determining your position underwater or on the surface of the water and moving in the appropriate direction.

At a point with poor transparency or a point where you are diving for the first time, it is difficult to determine your position and the direction you are heading.

Of course, there is no problem if you float on the water surface to check the position and swim on the water surface and exit, but if you learn navigation, you can enjoy diving with confidence even in areas where the water surface current is fast.

For example, in addition to being able to accurately exit from the entry point, you can also navigate to a safe exit point other than the entry point in case of an unexpected situation.

Also, this is an absolutely necessary technique when you participate in fan diving where guide divers do not accompany you.