SOURCE: RAUNAK KUNDE / NEWS BEAT / IDRW.ORG
Spanish shipyard Navantia has proposed an unprecedented offer of complete Transfer of Technology (ToT) for its cutting-edge AIP system, the Bio-Ethanol Stealth Technology (BEST). Designed to enhance stealth and operational capabilities, the BEST AIP system is at the forefront of submarine propulsion technology. Navantia’s proposal positions it as a strong contender in India’s strategic submarine programs, including the ambitious Project-75 (I) and future initiatives such as Project-76.
The BEST system is an advanced Air-Independent Propulsion (AIP) technology that allows submarines to recharge their batteries while submerged. This eliminates the need for periodic snorkelling, a manoeuvre during which the submarine must surface, exposing itself to detection and potential attack. The innovative system uses a bioethanol reforming process, a renewable fuel derived from organic feedstock, to produce a hydrogen-rich stream. This hydrogen is combined with pure oxygen in a fuel cell, generating electrical power silently and stealthily.
Unlike many AIP systems operational in other navies, Navantia’s technology does not require the storage of hydrogen onboard, a feature that marks a significant leap in both tactical and safety parameters. The system produces hydrogen on demand, eliminating the risks associated with storing large quantities of compressed gas in confined environments. This unique capability increases the submarine’s strategic autonomy, enhances its deterrence potential, and significantly boosts crew safety.
Navantia describes the BEST system as a third-generation AIP solution, a generation ahead of the Fuel-Cell-based AIP system developed by India’s DRDO. The Spanish shipbuilder claims that this technological edge ensures not only superior stealth and endurance but also operational simplicity. The extensive sensorization of the system reduces the number of personnel required for its operation, while simultaneously enhancing the safety and efficiency of the submarine.
A critical component of Navantia’s offer is the complete Transfer of Technology for the BEST system. This ToT commitment extends beyond the Project-75 (I) program, envisioning the incorporation of the BEST system into India’s next-generation submarine initiatives, such as Project-76. Under Project 76, India plans to develop 12 advanced conventional submarines with indigenous designs and state-of-the-art systems. Navantia’s ToT would empower Indian shipyards and research organizations to domestically manufacture and further develop this advanced AIP technology, aligning with the government’s Aatmanirbhar Bharat (Self-Reliant India) vision.
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