What is AIP Technology & Importance for Submarine Operations?

Lethality of a submarine owes a lot to its underwater endurance. Unlike nuclear powered submarines, lethality of a conventional diesel or electrical submarine depends on energy stored in rechargeable batteries for their propulsion power when submerged. Depending on the mission profile, the typical endurance can range between 1 to 2 days of continuous submergence. As the energy of the battery get depleted, submarine is forced to surface to snorkel level and run the diesel generators for charging the batteries; oxygen needed for combustion being drawn from the atmosphere. This probably is the most vulnerable phase during an operational   mission, since acoustic, radar and satellite signature of the  vehicle  will  be high under this condition..............

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