Defence Research and Development Organisation (DRDO) : News and Updates


Senior member
Mar 11, 2018
India, Kerala
Fuel Cell based Air Independent Propulsion (AIP) System Crosses Important Milestone of User Specific Tests

Posted On: 09 MAR 2021 2:09PM by PIB Delhi

Defence Research and Development Organisation (DRDO) has achieved an important milestone in the development of Air Independent Propulsion (AIP) System by proving the land-based prototype on 8 March 2021. The plant was operated in endurance mode and max power mode as per the user requirements. The system is being developed by Naval Materials Research Laboratory (NMRL) of DRDO.

AIP has a force multiplier effect on lethality of a diesel electric submarine as it enhances the submerged endurance of the boat, several folds. Fuel cell-based AIP has merits in performance compared to other technologies.

While there are different types of AIP systems being pursued internationally, fuel cell-based AIP of NMRL is unique as the hydrogen is generated onboard.

The technology has been successfully developed with the support of industry partners L&T and Thermax. It has now reached the stage of maturity for fitment into target vessels.

Raksha Mantri Shri Rajnath Singh congratulated DRDO, Indian Navy and Industry for the achievement.

Secretary DDR&D and Chairman DRDO, Dr G Satheesh Reddy appreciated the efforts of the teams involved in the successful development. He called upon the DRDO fraternity to come up with more such advanced technological achievements by putting extraordinary efforts.
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Senior Member
Nov 30, 2017
Bad design as the water will flow over it even in sea state 5.

I too had that in my mind that if sea goes rough it will be difficult to even control the ship and might even topple..
Let's see what they have in their mind and better sense prevail..

Such ships exist though.

On the DRDO design, you can check scale using the trucks on deck. It's a pretty massive ship, so will have sufficient height from the waterline.
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