The most prominent feature of the Type 212 is an air-independent propulsion system using a silent hydrogen/oxygen fuel cell system that makes the submarine more difficult to detect and inceases submersion time. (the ship can carry a total of 12 torpedoes), which also allow the integration of missiles of various types. In the bow part of the ship there are 6 533 mm torpedo tubes. The development of detection technologies and the increasing number of submarinejagdmittel, as well as the advanced area of the application required the development of the new class 212 A. Class 206A influenced the design of the German submarine already high flexibility for operations in shallow and narrow waters with lowest snorkel times for battery charging. The the first AIP system to enter regular submarine service were the Swedish Navy's three Gotland-class submarines, which each used two Stirling cycle engines as an adjunct to their main diesel-electric engineering plants to provide underwater endurance up to several weeks. For the construction of the light (outer) hull, composite materials were used from which the deck plating, cover of hydroacoustic stations, rudders and depth controls were used. this value in the case of type 214 ships. The manufacturer declares that the magnetic signature of the 212A ships is less than 40 percent. The use of non-magnetic steel also optimizes the demagnetization system to the necessary minimum and saves valuable electricity. The ship was built in a one and a half-hull system, and its strong hull is made of non-magnetic steel, which not only reduces the risk of detecting the ship, but above all enables its safe operation in areas with high mine risk. And by carefully husbanding their resources, they can revert again to slow-speed operation and repeat the cycle several times over weeks of submergence. Submerged, they can opt for a long, slow, silent patrol that keeps their batteries fully charged and thus capable of powering speed bursts of significant duration. If conditions permit, they can transit rapidly on the surface with-out unduly expending the wherewithal for superior underwater performance. AIP dramatically expands the tactical "trade-space" for diesel-electric submarines. Type 212 Multi Purpose Submarine - DesignĪir-Independent Propulsion" (AIP) submarines can be used to telling effect for both short- and medium-range missions.
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