# Advancements in unmanned maritime autonomous systems > Live situation record from CLSTR: https://clstr.news/situations/advancements-in-unmanned-maritime-autonomous-systems > Updated: 2026-09-23T06:18:27.000Z. Sources: 5. Developments: 2. Developments in unmanned maritime technology are being demonstrated through industrial showcases and multinational military exercises. In Brazil, OceanAlpha presented USV platforms designed for subsea survey, inspection, and offshore energy tasks, such as wind and cable route inspections. In Portugal, during the REPMUS 2026 exercise led by the Portuguese Navy and NATO, Ocean Power Technologies deployed WAM-V vessels to test capabilities in mine countermeasures, harbor security, and surveillance. Following these demonstrations, German company Quantum Systems unveiled its Seavex and Subvex autonomous surface and underwater systems in Sesimbra. Company leadership noted that the security landscape in Europe is shifting, citing the Black Sea conflict as evidence of how unmanned systems can allow smaller forces to challenge larger navies and protect critical maritime infrastructure against threats like Russia’s shadow fleet. ## Timeline ### 2026-09-23: Quantum Systems unveils autonomous maritime drone systems German firm Quantum Systems introduced its Seavex and Subvex autonomous maritime drones in Portugal to address evolving security threats and gaps in naval surveillance. 2 sources. https://clstr.news/cluster/quantum-systems-unveils-autonomous-maritime-drone-systems ### 2026-09-21: Unmanned surface vessel technologies showcased in Brazil and NATO exercises Companies OceanAlpha and Ocean Power Technologies are advancing unmanned surface vessel (USV) capabilities through offshore energy showcases in Brazil and NATO-led maritime exercises in Portugal. 2 sources. https://clstr.news/cluster/unmanned-surface-vessel-technologies-showcased-in-brazil-and-nato-exercises --- Cite as: Advancements in unmanned maritime autonomous systems. CLSTR, https://clstr.news/situations/advancements-in-unmanned-maritime-autonomous-systems