A submarine is basically a vessel that has the ability to operate independently underwater. This is different from a submarine, which has more limited power or underwater ability. The term most commonly refers to a large, manned vessel. Submarines were first widely used during World War I (1914-1918). Submarines were first built by the Dutch inventor Dribble in the early 17th century, but were first used in naval combat only 150 years later. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essay Mostly in the beginning, in ancient times, humans tried to work underwater. They tried to work from simple submarines to nuclear-powered manned underwater ships; Humans have sought a means to stay underwater safely during war and to gain an advantage in warfare, which is the root of the development of submarines. This article will cover the operation, advantages, disadvantages and application of AIP in modern submarines and compare Air Independent Propulsion (AIP) system with nuclear submarine. An accurate observation is that submarines designed for different missions possess different capabilities. Since submarines became the primary weapon of naval warfare, designers have focused on making them quieter and increasing their underwater capabilities. Traditional diesel-electric submarines require surface area to charge their batteries and have the ability to stay underwater for only a few days. As battery technology improved, the endurance of these submarines increased proportionately. The introduction of air-independent propulsion (AIP) greatly improved the underwater endurance of these submarines and gave them significant advantages. This is the fundamental reason why the world is moving towards the AIP system. The best part is that AIP technology can be installed on existing older generation submarines by inserting a new hull section during its production. The need to do submarine development now, as with other military systems, was driven by the World Wars and the Cold War, wanting just improvements in sound effects, armament, safety, automation and submerged power. In the years leading up to and during World War II, Germany alone built over 1,000 submarine boats and diesel submarines. During World War II, Germany produced over 35 diesel submarines per month. In fact, the total number of land-based submarines built during World War II, excluding Japan, was well over 2,500. Although the focus during World War I and World War II was on the rapid development and construction of vessels, the The design of underwater boats was successful, especially with regards to armaments and the creation of connection systems. With the advent of the Cold War and the need for longer submerged power, the main location was transformed into a nuclear submarine, causing an explosion in the production of submarine ships over the next 34 years. From 1955 to 1989 the Soviet Union and the United States alone produced over 350 nuclear submarines. From a high number of nuclear submarines in the world during the Cold War, 1 in 400 in 1989, today there are only about 160, as nuclear submarine production has slowed significantly everywhere in the world. The construction of nuclear submarines is limited to the United States,,.