Japan's Ministry of Defense is developing technology to detect submarines using small drones. The plan involves equipping drones with sensors that can capture minute changes in magnetic fields caused by submarines, automating some search missions previously conducted by Japan's Maritime Self-Defense Force helicopters. The initiative aims to reduce the search burden on personnel and enhance the ability to monitor Chinese submarines.
According to the Nihon Keizai Shimbun (Nikkei) on September 10, the ministry plans to develop submarine detection sensors for small drones by 2031. While the exact budget has not been disclosed, the request for the 2027 fiscal year includes funding for this development. Japanese companies are expected to lead the project, with plans to produce prototype equipment between 2027 and 2031 to verify performance.
The Japanese government views drones as a new pillar of defense capability that can perform interception and surveillance missions while minimizing the risk to Self-Defense Force personnel. To avoid reliance on imports, which could disrupt supply in emergencies, the government is also working to establish a domestic production base. The target for drone production by 2030 is set at 80,000 units.
The submarine detection sensors will utilize quantum magnetic technology to locate submarines while submerged. Submarines are equipped with technology to reduce the magnetic fields emitted from their hulls to avoid detection by enemies. The ministry plans to capture the remaining subtle changes using high-sensitivity sensors.
These sensors will be mounted on small drones that can be produced in large quantities at low cost. They can fly closer to the water's surface than manned patrol aircraft, making them advantageous for detecting submerged submarines. The plan is to deploy these drones en masse to enhance surveillance capabilities.
To address the limitations of small drones, which have short ranges, the Maritime Self-Defense Force will utilize its vessels as launch points. By launching drones from ships at sea, a wider area can be searched. The drones will focus on detection missions, while ships will launch torpedoes if a submarine is found.
This surveillance network is expected to support defense operations in Japan's southwestern island regions. The Self-Defense Forces plan to transport personnel and supplies necessary for island defense using transport ships. However, if these transport ships come under torpedo attack from foreign submarines while in transit, it could hinder operations and disrupt battles occurring on the islands. The ability to detect submarines early is crucial for protecting the supply routes for personnel and materials.
* This article has been translated by AI.
Copyright ⓒ Aju Press All rights reserved.