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Japan and Indonesia Explore Co-Development of Warship.
According to information published by Kyodo News on January 7, 2025, Japanese Defense Minister Gen Nakatani and Indonesian Defense Minister Sjafrie Sjamsoeddin have initiated discussions on the joint development of a naval vessel.
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Japanese Navy's JS Izumo and Mogami-class frigate JS Noshiro. (Picture source: Japanese MoD)
According to a Japanese government official, the proposed ship may be modeled on a destroyer from Japan's Maritime Self-Defense Force (JMSDF). These vessels are renowned for their advanced capabilities, including anti-air, anti-surface, and anti-submarine warfare systems. Adapting such a design would significantly enhance Indonesia’s naval strength, aligning with its strategic goals in safeguarding its vast archipelagic territory.
The collaboration aims to leverage Japan’s expertise in naval engineering and Indonesia’s growing defense industry. By sharing technological knowledge and manufacturing responsibilities, the project could serve as a cornerstone for long-term defense collaboration.
Although the idea of joint ship development has been under consideration for several years, progress was hindered during the administration of former Indonesian President Joko Widodo. His government prioritized the relocation of Indonesia’s capital from Jakarta on Java to Nusantara in Borneo, diverting resources and attention away from defense-related initiatives.
The renewed focus on maritime cooperation underscores Indonesia's recognition of its strategic vulnerabilities in the face of rising regional tensions. For Japan, this partnership aligns with its Free and Open Indo-Pacific (FOIP) strategy, which emphasizes collaboration with Southeast Asian nations to maintain maritime stability.
Japan’s stringent "Three Principles on Transfer of Defense Equipment and Technology" pose challenges for defense exports. However, these restrictions can be navigated through joint development agreements. Under this framework, Japan can engage in co-manufacturing with partner nations, enabling the transfer of advanced military technology while adhering to domestic legal constraints.
The joint naval ship development signals a growing strategic partnership between Japan and Indonesia. Both nations face security challenges, including territorial disputes and the need to secure vital sea lanes for trade and energy supply.
The initiative also reflects a broader trend of regional countries strengthening ties with Japan as a counterbalance to assertive maritime activities in the Indo-Pacific. For Indonesia, the partnership offers access to defense technology and training, potentially setting the stage for more collaborative projects in the future.