New Delhi: Japan is increasingly looking to India as a partner for defence technology development and manufacturing. The India-Japan defence cooperation initiative aims to combine Japan’s advanced technology with India’s growing manufacturing capacity, creating new opportunities for joint production, naval modernisation and stronger supply chains.
A major example is the UNICORN integrated antenna system for naval warships. The project reflects a broader effort by both countries to deepen defence-industrial cooperation and strengthen maritime security in the Indo-Pacific region.
Details of Latest India-Japan Defence Deal
India and Japan are expanding their defence partnership beyond traditional military exercises and the purchase of equipment. Both countries are exploring ways to develop and manufacture advanced defence systems together.
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The partnership brings different strengths to the table. Japan has advanced engineering capabilities and experience in naval technology, while India offers a large industrial base, skilled workers and established defence manufacturing companies.
On August 20, 2026, Indian Defence Minister Rajnath Singh and Japanese Defence Minister Shinjiro Koizumi held a bilateral meeting in New Delhi. They discussed stronger defence cooperation, technology transfers and the early implementation of the UNICORN project.
The two sides also agreed to establish a working group to coordinate cooperation across operational requirements, intelligence, equipment, technology and defence industries.
The UNICORN Mast: A Major Example Of Joint Defence Technology
One of the most important projects in India-Japan defence cooperation is the UNICORN integrated communication antenna system.
UNICORN stands for Unified Complex Radio Antenna. It combines several antenna functions within a single integrated mast, helping reduce the number of exposed components on a warship.
The system is designed to improve a vessel’s stealth characteristics by reducing its radar cross-section. This can make the ship more difficult for enemy radar systems to detect, although actual performance depends on the vessel and its overall design.
The technology is already used on Japan’s Mogami-class frigates. Japan and India signed a Memorandum of Implementation for the joint development and production of the system in November 2024.
India’s Bharat Electronics Limited (BEL) is expected to play a major role in the Indian development and production work, with Japanese companies contributing relevant technology and engineering expertise. The project represents an important step towards closer defence technology cooperation between the two countries.
How Japan’s Technology And India’s Manufacturing Capacity Can Work Together
Japan has considerable experience in advanced electronics, naval engineering and precision manufacturing. However, expanding production can require additional industrial capacity and reliable suppliers.
India offers opportunities to manufacture components and integrate systems through its existing defence-industrial network. Cooperation could also help Indian companies gain experience in advanced manufacturing processes and quality standards.
For Japan, working with Indian industry could support a more diversified manufacturing network. For India, the partnership could help strengthen domestic defence capabilities and reduce dependence on imported finished systems. However, the actual benefits will depend on the technologies transferred, the responsibilities assigned to each company and the progress of individual projects.
What India-Japan Defence Deal Means For The Indian Navy
The UNICORN project could help the Indian Navy access advanced integrated antenna technology for selected warships.
Combining several antenna functions within a single structure can reduce exposed equipment and support a cleaner ship design. It may also help manage interference between antenna systems and simplify certain aspects of installation and maintenance.
The project could provide Indian engineers with valuable experience in developing and integrating advanced naval systems. Its final impact will depend on the programme’s implementation, the ships selected for installation and the system’s performance in operational conditions.
A Wider Strategic Partnership In The Indo-Pacific
India and Japan share an interest in maintaining peace, stability and secure maritime routes in the Indo-Pacific.
Their defence relationship includes military exchanges, maritime cooperation, logistics arrangements and discussions on defence technology. Industrial cooperation adds another layer by connecting security objectives with manufacturing and research.
The two governments have also expressed interest in exploring further cooperation in defence equipment and technology. As regional security challenges evolve, the partnership could become more important for developing reliable defence supply chains and improving the capabilities of both countries.
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FAQs
UNICORN is an integrated naval antenna mast that combines multiple antenna functions within a single structure. It is designed to reduce exposed components and improve the stealth characteristics of warships.
Japan is expanding cooperation to strengthen its strategic partnership with India, explore joint development opportunities and diversify defence supply chains. India offers manufacturing capacity, while Japan contributes advanced technology and engineering expertise.
Bharat Electronics Limited (BEL), a government-owned defence electronics company, is expected to play a major role in the Indian side of the UNICORN joint development and production project.
