DRDO working on cutting submarine vulnerability

Work is apace at the Defence Research and Development Organisation's Naval Materials Research Laboratory at Ambernath in Maharashtra on developing a land-based prototype plug, and subsequently an engineered, operational version of an Air Independent Propulsion (AIP) system that will significantly cut the ‘indiscretion rate' of diesel and electric submarines.

The ‘indiscretion rate' is the percentage of time a submarine spends snorting when it is most vulnerable. By eliminating the need for conventional submarines to frequently resurface for recharging batteries by breathing in air, it would considerably enhance their sub-surface endurance.