The light on the bottom of the sea is not sufficient, what does the submarine rely on to avoid the r

Nowadays, people's horizons are becoming wider and wider, I know outer space or deep water, I remember a certain cognition, and for which submarines are in deep water, what do they rely on to determine their position and avoid reefs is actually very simple,Using the same acoustic detection as dolphins, it can effectively avoid reefs to ensure navigation in deep sea areas. <>

We all know that mobile phones, cars and many navigation uses GPS in real life, but GPS does not work after entering the water, still in the deep sea, due to the depth is relatively deep, the light is difficult to refract, and it also leads to a dark area in the deep sea area, no light is very good, someone can get involved in it, at this time the submarine was invented, with the submarine, people can explore in the deep sea area, seek unknown areas, and there are many dangers in the deep sea field, Such as reefs and rifts, and so on. They are particularly dangerous, and navigating in the deep sea at this time requires sound waves to locate one's position and determine whether there is a reef ahead. At first, people also encountered great difficultiesHowever, when it was discovered that the sound waves of dolphins could detect unknown areas ahead, they wondered if they could be used on submarines.

Due to the serious lack of light in the deep sea, it is not feasible to use lighting tools in the deep sea area, and the deep sea area also has a certain time limit, so the lighting tools cannot be used at this time on the seabedRely on our sonar sound wave detection to send out sound wave detectionOnce there is a reef ahead, the sound wave will feedback a data, so that people know if there is a reef in front of them to ensure their safety. So the submarine in the sea in a poorly lit place sonar detection to avoid the reef. <>

Human beings are always exploring the unknown, and have invented a lot of things, submarines can allow people to operate in the deep sea area, and sound wave deep is a great invention, which can allow submarines to avoid reefs in deep sea areas.

Theoretically, it relies on sonar, but in fact, because the huge noise generated by active sonar in actual combat will expose its position, in most cases, it relies on nautical charts, and the nautical charts are drawn by acoustic survey ships.

If there is no light on the bottom of the sea, the submarine relies on its own energy to generate light to irradiate the bottom of the sea, which improves its own safety.

By sonar and radar. These methods are able to find accurate directions on the dark seabed.

The submarine uses a sonar system to discern the distance from the reef so that the submarine can take refuge in advance.

It's by perceiving the energy, because they have some energy that is specifically perceived. In this way, you can know where there are stones, which is a good way to avoid this collision problem.

Submarines can avoid reefs in the following ways:

1: Send a survey ship to survey the sea chart before sailing, and you will not be equipped with reefs if you understand the topography of the seabed 2: Use high-frequency sonar detection to avoid reefs, but this method makes it easy for submarines to be discovered by enemy submarines that are closer.

3. Maintain depth while sailing.

Radar detection detects it at a great distance, and then it dodges it.

There was a great man who once said--- cross the river by feeling the stones.