Hanwha Ocean and Hanwha Aerospace have initiated the development of advanced fuel cells for export-type 3,000-ton submarines. The project involves creating fuel cell systems equipped with next-generation nitrogen-mixed long-life Proton Exchange Membrane Fuel Cell (PEMFC) modules. PEMFC technology utilizes a chemical reaction between hydrogen and oxygen to generate electricity, offering benefits like low operating temperature, high power density, and eco-friendliness. The goal is to enhance the submarines' performance by incorporating fuel cells with improved durability and extended service life. This development will enable submarines to utilize the Air Non-essential Propulsion System (AIP) for prolonged underwater operations, with the advantage of reduced noise and vibrations. By achieving these milestones, the collaboration between Hanwha Ocean and Hanwha Aerospace aims to bolster the technological capabilities of submarines and ensure a more efficient and sustainable defense solution by 2028.