Patria from Finland Unveils New Patria TREMOS 120mm Wheeled Self-Propelled Mortar System.

On October 29, 2024, Finnish defense company Patria unveils its latest artillery innovation, the Patria TREMOS 120mm wheeled self-propelled mortar system, at the Future Mortar Systems conference in London. This advanced system revolutionizes traditional mortar capabilities, combining high mobility, rapid deployment, and robust firepower to meet the demands of modern and future battlefield conditions. The Patria TREMOS uses advanced recoil technology that supports integration across a wide range of vehicles, including 4x4, 6x6, and 8x8 wheeled configurations, as well as lightweight tracked vehicles, making it adaptable to diverse operational needs.
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The Patria TREMOS 120mm self-propelled mortar system in action during a live-fire demonstration, showcasing its rapid deployment and high-rate firepower. (Picture source: Patria)

The Patria TREMOS is designed around a 120mm smoothbore mortar, compatible with existing barrels and breeches, allowing it to utilize NATO-compliant ammunition and ballistic tables already in service. This compatibility simplifies logistics and training, as forces can leverage in-service equipment and procedures. The hydro-pneumatic recoil system minimizes the impact on the platform, eliminating the need for ground support and enabling seamless integration across various vehicle classes. This design enhances stability and supports rapid repositioning, ensuring quick engagement and immediate withdrawal.

Key performance capabilities define the Patria TREMOS as a powerful and responsive support tool for infantry. The system achieves a rapid rate of fire, capable of launching 12 to 15 rounds per minute, with the first three rounds delivered within just 15 seconds. Depending on the ammunition, it can reach targets over 7 kilometers away, delivering sustained fire support even in fast-moving scenarios.

Designed for rapid deployment, the Patria TREMOS can be ready to fire within 60 seconds of arrival at a firing position. Upon completing a fire mission, the system can immediately relocate, enhancing crew safety and minimizing exposure to counter-fire. This “shoot-and-scoot” capability is supported by the system’s modular and recoil-optimized structure, which ensures stability across various terrains and vehicle platforms. This modular design not only optimizes space within the vehicle but also makes it easy to transfer the system between different platforms, improving logistical flexibility.

For enhanced targeting and operational accuracy, the Patria TREMOS can be equipped with an Inertial Navigation Unit (INU) and integrated with Battle Management System (BMS) connectivity, ensuring precision from the first shot. The system also includes an intuitive modular ammunition storage unit, allowing secure and efficient handling of various types of mortar rounds, with safety mechanisms built in to allow use in day, night, and all-weather conditions.

A dedicated crew of three to four members can operate the Patria TREMOS, with ergonomic seats allowing them to remain in operational positions even during vehicle movement, reducing time for setup and engagement. The efficient recoil system enhances both mobility and safety by removing the need for extensive ground preparation, making the system suitable for rapid deployment and repositioning.

Through its combination of advanced mobility, high-intensity firepower, and rapid response capability, the Patria TREMOS is an ideal artillery solution for modern warfare. By integrating modern recoil technology with existing mortar components, Patria offers a solution that effectively extends the capabilities of traditional mortar systems, making them a more powerful asset in today’s unpredictable battlefield environments.