The submarine The submarine is a marine vehicle with a streamlined structure that helps it to propel itself and dive underwater. It can also remain below it, immersed in water for long periods of time, often using submarines The submarines were first deployed in the First World War between 1914 and 1918, and were also equipped with anti-missile and anti-submarine missiles. , And Germany was the first country to use it; to destroy commercial vessels. In World War II between 1939 and 1945, submarines had a strong presence in the Atlantic Ocean by the German naval forces, and in the Pacific by the US Navy. It is worth mentioning that The submarines have been developed[1] [2] The idea of the submarine came for the first time in 1580, by the English William Bourne , who has studied the cause of the buoyancy of the vessel on the surface of the water; to present the idea of the submarine, and how they work, but his thoughts remained on paper, I moved the patent for the Dutch Cornelius Drpl who built the first submarine in 1623, where They were transported on board a ship, then thrown into the Thames' width by 12 paddles, until they reached a depth of 15 feet. [3] The most powerful submarine in the world Continue the development of submarines; to become more powerful, effective, are the introduction of improvements and additions to them, enabling them to compete with other submarines, and with all this competition, I got five submarines for the title of the most powerful and largest submarine in the world, they are arranged according to their strength as follows: [ 4] Submarine Russian Akula: a submarine atomic strategy, dubbed the title ( the shark), also nicknamed the title (Typhoon) , which means: the hurricane, according to NATO NATO , the strongest and largest submarine in the world; it has a length of 170 m; no longer than a football field, It is 23 meters wide and designed to withstand about 20 rocketsAnd the torpedo is made of titanium, so it is able to stay under water for 180 days, and it is able to sail in the snow, it is working on solid fuel, and It is worth mentioning that the submarine has a long-range launch capability; it has a range of 8,300 km. The war section consists of 10 self-guided heads, 6 533-mm torpedoes and 8 air defense systems, which can erase all of Europe if all missiles . Russian submarine Puri: Russia plans to adopt the Bury submarine as the main force of the nuclear navy ; it is a powerful submarine; it possesses the ability to penetrate any missile defense system in the world, and respond to any missile system anywhere in the world, in addition to the possession of missiles intercontinental. American submarine Ohio: US Navy built this submarine in 1960, and began serving in the forces in 1996, carrying 24 intercontinental ballistic missiles, the submarine works on the reactor reaches the submarine to the speed of 25 knots, and cooled by water. Russian submarine Morina: The Morina submarine has evolved into four phases since its first appearance in the Cold War. It began operating in 1972 under the name Delta 1, then developed into the Delta 2, the Delta 3, which had the capability to launch ballistic missiles. Finally Delta 4 To carry out its tasks quietly. The Vanguard submarine was built in 1993 and began its development in 2002. The submarine has the capacity to carry a weight of 15,900 tons when diving. It has the capacity to carry 16 strategic missiles per rocket. A range of warheads, in addition to the weight of each head up to 120 kilo tons, which is classified as the largest submarine produced by the United Kingdom. Submarine system Lies the principle of the submarine work in being able to control power floats on the water, Vambassnh, or submarine, floating on the water; because the weight of water , which is working on removing him equal to the weight, and when the water displacement, it produces an upward force opposite the force of gravity(Buoyancy force). Some submarines have been added to the submarine, which allows them to have buoyancy control. They are equipped with balance tanks and reservoirs whose role is to fill with water or air alternately. When the submarine is on the surface, The tanks are filled with air, and then the density of the submarine is less than the density of the water. If the submarine goes down, it opens its tanks; it is filled with water rather than air, which makes it denser than water. When the submarine reaches the required depth, it balances the air and the water in its tanks until it reaches a level where the density is equal to the density of the water. As for controlling the corner of the submarine, the rear of the submarine is equipped with mobile groups of short wings , Which is called[5]
