
Copyright: DCNS
The French naval defense major DCNS has offered Air-Independent Propulsion (AIP) for the Scorpenes being constructed for the Indian Navy at Mazagon Dock Limited in Mumbai.AIP is an auxiliary system for augmenting the ability of submarines to operate without surfacing, by increasing the endurance of the boat’s sub-surface operability. The DCNS system, known as MESMA (Module d’Energie Sous-Marine Autonome), is based on the combustion of stored oxygen and ethanol to augment battery-powered propulsion. Conventional diesel-electric vessels have to surface periodically to charge their batteries, which ultimately propel the boat. An AIP would decrease the Indiscretion Rate, which signifies the required frequency of surfacing to recharge batteries or exchange air, and increase the ability to loiter under water.


