Japan has made a major leap in its defence strategy by successfully testing a new long-range cruise missile. The missile, named 12SSM-ER has a striking range of about 1,500 km. This development marks a significant step toward enhancing Japan’s defence against regional threats.
Details of the 12SSM-ER Missile
The 12SSM-ER is a state-of-the-art cruise missile tested by the Ministry of Defence and the Ground Self-Defence Forces. It was launched from a ground-based system equipped with two transport and launch containers. The launcher is based on the Mitsubishi 8×8 Gen.2 heavy platform, which offers mobility and durability for field deployment.
The missile measures 9 meters in length, has a diameter of 1,000 mm, and weighs 1,600 kg. These specifications make it comparable in size and weight to the US Tomahawk cruise missile, which Japan is also acquiring for its navy.
Testing Overview
The exact date of the tests was not disclosed, but the Defence Ministry confirmed five successful launches in October 2024. Three tests were conducted from land-based platforms, and two were carried out from a surface platform. These tests demonstrate the missile’s versatility and potential for various applications.
Enhanced Range and Strategic Importance
Once operational, the 12SSM-ER will greatly expand Japan’s striking range. Currently, Japan’s defence systems cover a 400 km range. The new missile’s 1,500 km reach will provide greater coverage and improve the country’s ability to deter regional threats, particularly from China.
The missile’s extended range is also expected to safeguard Japan’s territorial waters and surrounding areas. In addition to the ground-based version, Japan plans to deploy naval variants on its self-defence force warships. These include anti-submarine destroyers, missile destroyers, and frigates.
Future Plans for Missile Deployment
Japan plans to deploy the ground-launched 12SSM-ER by late 2025. By then, it will become a cornerstone of Japan’s growing defence strategy. Naval versions will be installed on warships to enhance maritime security.
Moreover, Japan is working on two additional cruise missiles with even greater ranges of 2,000 km to 3,000 km. These missiles are expected to provide even broader coverage and further strengthen the country’s defensive posture.
Aircraft-Compatible Versions in Development
Another critical development is the aircraft-compatible version of the 12SSM-ER. Japan is designing a variant that will be mounted on F-2 fighter jets. This modification is expected to be completed by the end of 2027. The aircraft-compatible version will give Japan the flexibility to launch missiles from the air, increasing its ability to respond swiftly to threats.
Legal Framework and International Context
Unlike the United States, Japan was not bound by the Intermediate-Range Nuclear Forces Treaty, which limited the development of missiles with ranges over 1,000 km. Although Japan faced political pressure from the US to refrain from building long-range missiles, it pursued the development to ensure its national security.
The absence of legal constraints has allowed Japan to focus on producing modern, long-range missile systems to counter potential regional threats.
Why the 12SSM-ER Matters
This missile is more than just a new weapon; it represents a shift in Japan’s defence policy. The longer range allows Japan to respond to threats from greater distances, providing a strategic edge. It also signals Japan’s intention to take a more proactive role in regional security.
The 12SSM-ER aligns with Japan’s goal of enhancing its military capabilities while maintaining peace in the region. With tensions rising in East Asia, this missile is a crucial addition to the country’s defence arsenal.
Looking Ahead
As Japan continues to develop advanced missiles, its focus remains on maintaining a balance between security and peace. The 12SSM-ER missile and its future iterations will likely become key elements of Japan’s national defence strategy. These developments underline Japan’s commitment to protecting its sovereignty and ensuring stability in the region. With plans to deploy these missiles soon, Japan is taking bold steps toward modernising its defence systems and preparing for the challenges of the future.