8 July 2025

Japan’s New ‘Railgun’ Summed Up in 4 Words

Georgia Gilholy

DAHLGREN, Va. (Jan. 31, 2008) Photograph taken from a high-speed video camera during a record-setting firing of an electromagnetic railgun (EMRG) at Naval Surface Warfare Center, Dahlgren, Va., on January 31, 2008, firing at 10.64MJ (megajoules) with a muzzle velocity of 2520 meters per second. The Office of Naval Research’s EMRG program is part of the Department of the Navy’s Science and Technology investments, focused on developing new technologies to support Navy and Marine Corps war fighting needs. This photograph is a frame taken from a high-speed video camera. U.S. Navy Photograph (Released)

Key Points and Summary on Japan’s New Railgun – Japan has unveiled a ship-mounted prototype of an electromagnetic railgun, marking a significant step in developing a counter to China’s growing hypersonic missile arsenal.

-The new weapon, spotted on the test vessel JS Asuka, is capable of firing projectiles at Mach 6.5. This development comes as Japan faces dwindling stockpiles of expensive traditional interceptor missiles, like the SM-6 and Patriot, and delays in US programs.

-By pursuing a railgun, which fires rounds at a fraction of the cost of a missile, Tokyo is investing in a high-volume, sustainable defense system designed to counter saturation attacks from regional adversaries.

-Summed up in 4 Words: A Possible Game Changer?

Japan’s Railgun Leap Sends Strategic Warning Shot at China’s Hypersonic Edge

Japan’s investment in new weapons technology is pricey, but it could be a vital counter to China’s growing hypersonic missile arsenal.
Model Replaces Scrapped U.S. Version

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