South Korea's future HPRS rocket launcher challenges US-made M142 HIMARS for coastal defense.

As reported by Mason on April 1, 2025, Hanwha Aerospace has unveiled a new 6x6 rocket launcher system named High-Performance Launch Rocket System (HPRS) in Australia. The HPRS is a single-pod launcher with a configuration similar to the U.S. M142 HIMARS and is designed for lightweight deployment and high mobility. It serves as a lighter version of the K239 Chunmoo multiple launch rocket system, weighing under 30 tons, and is equipped with four CTM-MR anti-ship ballistic missiles (ASBMs). The HPRS platform prioritizes rapid transport and firing capability while maintaining compatibility with Chunmoo technology.
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The HPRS is a 6x6 rocket launcher carrying four CTM-MR anti-ship ballistic missiles (ASBMs) with a configuration similar to the U.S. M142 HIMARS, as it is designed for lightweight deployment and high mobility. (Picture source: Twitter/Mason)

The High-Performance Launch Rocket System (HPRS) differs from the previously revealed unmanned K239 variant. While both systems are developed under the direction of South Korea's Marine Corps and emphasize advanced technology for ship-based launch capabilities, the HPRS is a manned system. Both programs are part of a broader initiative to enhance long-range artillery fire missions from surface ships. The HPRS can be launched from amphibious and naval platforms using stabilization and fire control innovations derived from the unmanned Chunmoo concept.

The CTM-MR missile, which is integrated with the HPRS, is under development and expected to be completed by 2027. It is designed to serve as a cost-effective anti-ship ballistic missile (ASBM) option for countries with extensive coastlines. The missile has an operational range of 50 to 160 kilometers and a circular error probable (CEP) of 9 meters. It utilizes a composite propellant. The CTM-MR was first presented at the ADAS 2024 exhibition in Manila.

If the HPRS's rocket launcher unit is indeed based on that of the K-239 Chunmoo, we can imagine that additional munitions compatible with the HPRS could include the CGR-80 guided rocket, which has a range of 30 to 80 kilometers and a CEP of 15 meters. On the Chunmoo, each CGR-80 pod contains up to six rounds. All munitions, including the CTM-MR and CGR-80, are classified under United Nations number 0181 and NATO Munitions Designation Code 1.1E, indicating compliance with international standards.

The K239 Chunmoo MLRS, which seems to serve as the foundation for HPRS development, entered service in 2014 following development from 2009 to 2013. It was designed to replace the K136 Kooryong and provides multi-caliber launch capability. Chunmoo can launch 131 mm unguided rockets, 230–239 mm guided rockets, and 600 mm tactical ballistic missiles. Each launcher carries two pods, each capable of carrying various munitions, including 20 unguided 131 mm rockets, six guided 239 mm rockets, or tactical ballistic missiles such as the CTM-290.

The Chunmoo is mounted on an 8x8 truck chassis and features GPS-aided inertial guidance, an automated fire control system, and a protected cab for a three-person crew. It is capable of firing 12 guided rockets in one minute and can be reloaded in approximately seven minutes. The system is compatible with a separate ammunition support vehicle on the same chassis and includes capabilities for both remote and onboard firing.

The Chunmoo is mounted on an 8x8 truck chassis and features GPS-aided inertial guidance, an automated fire control system, and a protected cab for a three-person crew. (Picture source: South Korean MoD)

The CTM-290, also known as Ure-2, is a 600 mm tactical ballistic missile currently under development with a range of up to 290 kilometers. It is intended for integration with Chunmoo and is planned to be completed by 2032. The development of this missile includes improvements in propulsion and maneuverability using ducted rocket propulsion technology.

The Chunmoo system has been exported to several countries. The United Arab Emirates acquired 12 systems with associated support vehicles and munitions, delivered in 2021. Saudi Arabia entered a contract in 2022 for an undisclosed number of systems. Poland signed a contract in 2022 for 288 systems mounted on Jelcz 8x8 chassis under the Homar-K designation, with deliveries beginning in 2023. Poland's system integrates with the TOPAZ fire control system and includes both CGR-080 guided rockets and CTM-290 tactical ballistic missiles.

Hanwha Aerospace has become the first South Korean company to achieve large-scale defense exports. This is exemplified by its successful partnerships with Australia, where multiple systems have been adopted under national procurement programs. These include the AS9 Huntsman self-propelled howitzer (based on the K9 Thunder), the AS10 resupply vehicle (based on the K10), and the AS21 Redback infantry fighting vehicle. The recent unveiling of the HPRS rocket launcher system in Australia further illustrates Hanwha's expanding portfolio in the Indo-Pacific region.

Hanwha has indicated that the HPRS is not the main focus of its current marketing efforts. However, due to its features and configuration, it is considered suitable for potential export to Southeast Asian countries where mobility and versatility are priorities. The HPRS offers capabilities for both land-based and ship-launched artillery operations, which aligns with the defense requirements of nations with maritime security concerns.

Compared to the M142 HIMARS, the HPRS may offer certain operational advantages for specific mission profiles. Its design emphasizes lightweight construction and high mobility, which could make it more suitable for rapid deployment scenarios, especially from surface ships or in coastal defense roles. Additionally, the use of anti-ship ballistic missiles such as the CTM-MR suggests that the HPRS is tailored for maritime interdiction missions, a role not currently emphasized in HIMARS configurations. Furthermore, if based on the Chunmoo architecture, the HPRS could potentially support a broader array of munitions, enhancing flexibility for users with diverse operational requirements.