The missions of a submarine

The Leadership system  

A submarine has some poles in its back, those are called antennas. Basically, these antennas are based on periscope, radar and the devices for communication. When a submarine is travelling under water, so for learn what is going on in the water, they use periscope.  

Like periscope, a radar is used to learn about what’s happening on ground and to learn about the ships on the surface of water. Whereas the communication antennas are used to give instructions from the center and to inform the center about the situation under water. We cannot see the antennas on the back of the submarine from outside. But they left a line behind. When there is any danger a submarine travels indiscriminately and is disconnected from the outside world and after the danger has passed submarine again comes back to the right way. Besides that, a submarine has a sonar (sound navigation and ranging or sonic navigation and ranging) inside it which guides it and talks about the enemy submarines around it. There are two types of sonar:  

. Active sonar  

. Passive sonar 

which the waves travelled and talks about the distance between the submarine and the object. Animals like whales, dolphins and bats use the same technique as well. Also, many maps of the water are made with the help of sonar.  

Passive sonar:

Passive sonar is used to hear the voices coming from the target. Like an active sonar a passive sonar cannot detect the enemy and a submarine moves secretly on its way.

 Active sonar: 

Active sonar emits the sound waves under the water. Which return after hitting the target. A computer analysis the time in which the waves go and return and the computer immediately tells the distance between the object and the submarine.

A destroyed submarine: 

It is not that difficult to save the crew in a destroyed ship. But when a submarine is destroyed under deep water then it is a very difficult task. If a ship is near the coast, then a submarine which is almost 1000 feet below the water can be saved. At this moment, ropes are thrown in the water. Which have special type of bells on them. The sound of these bells can be even heard from very far, even under the water. The crew present in the submarine is provided artificial oxygen which can be used for many hours. While when a submarine sinks, many doors in it are opened in which there are some boats which are made from a balloon type of material, which are released. These boats quickly move to the surface of the water. These boats can save people in a depth of 100 feet. The crew in the submarine is provided with some special costumes for swimming which makes them safe under the great pressure of water. 

The crew must be active every time during war. Whether it is day or not they have to keep an eye on the water. Many instruments are used to detect missiles and many others. Sometimes the crew is even said to not move. This situation occurs when a submarine is surrounded by the enemy and there is very little oxygen. But there is one thing that we should remember that while we are sitting or sleeping, we need a lesser quantity of oxygen.  

The missions of a submarine 

Submarines are used in war. The nuclear submarines which are being used today cannot only target ships and submarines, they can even target how far it is, using its ballistic missiles. The most sensitive moment in a war is when a submarine is finding an enemy submarine. Now, the people in the ships which are destroyed are being saved with submarines. Besides that, submarines are even used in scientific research. These are submarines because of which we’re using many resources and are doing much big research in the depth of water.