Japan has enhanced its stand-off strike capabilities with the deployment of the nation’s first operational hypersonic glide weapon by the Japan Ground Self-Defence Force (JGSDF).

Previously known as the Hyper Velocity Gliding Projectile (HVGP) during its research and development phase, the system has now been redesignated by the JGSDF as the TYPE 25 High-Speed Glide Projectile (25HGP).

The JGSDF also announced the deployment of the TYPE 25 Surface-to-Surface (anti-ship) Guided Missile (25SSM), previously designated as the upgraded TYPE 12 Surface-to-Surface (anti-ship) Guided Missile.

The systems have been deployed with JGSDF units at Camp Kengun and Camp Fuji for island defence operations. Both are mobile systems mounted on an 8x8 vehicle.

The JGSDF stated the deployment of the two stand-off weapon systems (25SSM and 25HPG) is being undertaken “in response to the increasingly severe security environment surrounding Japan.” It added that it is “steadily advancing efforts to strengthen its stand-off defence capabilities in order to detect, deter, and eliminate invading forces at an early stage and from extended ranges.” In addition, ship and air-launched variants of the TYPE 25 SSM are slated for induction in late 2027.

Japan’s hypersonic programme is being led by the Acquisition, Technology & Logistics Agency (ATLA) with the HVGP development effort commencing in 2018. ATLA is also pursuing the development of a hypersonic missile, with mass production to begin this year and testing to conclude in 2028.

In March, the US State Department approved a Foreign Military Sale (FMS) to Japan, valued at approximately $340 million for the HVGP programme, covering test preparation, test support, and transportation support.

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