War Begin, A US Navy Aircraft Carrier Was Sunk after Hit by Torpedoes

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War begin china drove away u.s warship a u.s navy aircraft carrier was sunk after hit by torpedoes. China's military said it drove away a united states warship that it said illegally entered chinese waters near the disputed paracel islands on monday. The anniversary of a landmark international court ruling that beijing has no claim over the south china sea.

The USS Benfold entered the waters of the paracels without the approval of the chinese government. Seriously violating china's sovereignty and undermining the stability of the south china sea. The people's liberation army's southern theater command said, we urge the united states to immediately stop such provocative actions. the southern theater command said in a statement.

In a statement the united states navy seventh fleet said the Benfold had asserted navigational rights and freedoms in the vicinity of the paracel islands, consistent with international law and dismissed chinese claims of a serious violation of its sovereignty as false and a misrepresentation. It stressed that all ships have the right of innocent passage under international law as reflected in the convention on the law of the sea and permission is not required.

The operation reflects our commitment to uphold freedom of navigation and lawful uses of the sea as a principle, the statement said. The united states will continue to fly sail and operate wherever international law allows as USS Benfold did here, nothing the People's Republic of China says otherwise will deter us.

The paracels called chisha in china are among hundreds of islands reefs and atolls in the resource-rich south china sea contested by China, Vietnam, Taiwan, the Philippines, Malaysia and Brunei with Beijing claiming historic rights to everything within its so-called nine dash line which covers most of the region. China took control of the paracels a chain of barren islands about 250 miles, 400 kilometers east of vietnam and 220 miles, 350 kilometers, southeast of hainan island in the 1970s. They are also claimed by vietnam which calls them hoang saw as well as taiwan. all three countries require permission or advance notification before any military vessel sails through the area, the u.s navy said.

In 2005 USS Ronald Reagan a newly constructed 6.2 billion aircraft carrier, sank after being hit by multiple torpedoes. Fortunately this did not occur in actual combat but was simulated as part of a war game pitting a carrier task force including numerous anti-submarine escorts against HMS's Goblin, a small swedish diesel-powered submarine displacing 1,600 tons. Yet despite making multiple attacks runs on the reagan the Gotland was never detected. This outcome was replicated time and time again over two years of war games with opposing destroyers and nuclear attack submarines succumbing to the stealthy swedish sub.

Naval analyst Norman Polmar said the Gopland ran rings around the american carrier task force. Another source claimed u.s and to submarine specialists were demoralized by the experience. How is the Goblin able to evade the reagan's elaborate anti-submarine defenses involving multiple ships and aircraft employing a multitude of sensors and even more importantly how is a relatively cheap submarine costing around 100 million, Roughly the cost of a single F-35 stealth fighter today able to accomplish that, after all the us navy decommissioned its last diesel submarine in 1990.

Diesel submarines in the past were limited by the need to operate noisy air-consuming engines that meant they could remain underwater for only a few days before needing to surface. Naturally a submarine is most vulnerable and can be most easily tracked when surfaced even when using a snorkel. Submarines powered by nuclear reactors on the other hand do not require large air supplies to operate and can run much more quietly for months at a time underwater and they can swim faster while at it.

However the 200 foot long swedish gotland class submarines introduced in 1996 were the first to employ an Air Independent Propulsion (AIP) system in this case the sterling engine. A sterling engine charges the submarine's 75 kilowatt battery using liquid oxygen. With the sterling a gotland class submarine can remain undersea for up to two weeks sustaining an average speed of six miles per hour or it can expend its battery power to surge up to 23 miles per hour.

A conventional diesel engine is used for operation on the surface or while employing the snorkel. The sterling powered goblin runs more quietly than even a nuclear-powered sub, which must employ noise-producing coolant pumps in their reactors. The goblin class does possess many other features that make it adept at evading detection. It mounts 27 electromagnets designed to counteract its magnetic signature to magnetic anomaly detectors, its hull benefits from sonar resistant coatings while the tower is made of radar absorbent materials.

Machinery on the interior is coated with rubber acoustic deadening buffers to minimize detectability by sonar. The Gotland is also exceedingly maneuverable thanks to the combined six maneuvering surfaces on its x-shaped rudder and sail, allowing it to operate close to the sea floor and pull off tight turns. Because the stealthy boat proved the ultimate challenge to us and to submarine ships in international exercises, the u.s navy leased the goblin and its crew for two entire years to conduct anti-submarine exercises.

The results convinced the us navy its undersea sensors simply were not up to dealing with the stealthy AIP boats. However the Gotland was merely the first of many aip powered submarine designs, some with twice the underwater endurance and sweden is by no means the only country to be fielding them.

China has two diesel submarine types using sterling engines, fifteen of the earlier type 039a Yuan Class have been built in four different variants with more than 20 more planned or already under construction. Beijing also has a single type 032 Ching Class Vessel that can remain underwater for 30 days. It believed to be the largest operational diesel submarine in the world and boasts seven vertical launch system cells capable of firing off cruise missiles and ballistic missiles.

Russia debuted with the experimental lada class sanct peterberg which uses hydrogen fuel cells for power. It is an evolution of its widely produced kilo class submarine. However sea trials found that the cells provided only half of the expected output and the type was not approved for production. However in 2013 the russian navy announced it would produce two heavily redesigned ladas, the Kronstadt and Velikiyeluki expected by the end of the decade. 

Other producers of aip diesel submarines include Spain, France, Japan and Germany. These countries have in turn sold them to navies across the world including to india, israel, pakistan and south korea. Submarines using aip systems have evolved into larger more heavily armed and more expensive types including the german dolphin class and the French Scorpion Class Submarines.

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