SRT Marine Systems plc (SRT.L) develops and supplies automatic identification system (AIS)-based maritime domain awareness technologies and integrated surveillance, monitoring, management, and safety systems for coast guards, fishery authorities, ports, infrastructure owners, and vessel operators worldwide; core offerings include next-generation maritime intelligence and command-and-control platforms, commercial fisheries monitoring solutions, vessel tracking and management systems for ports and waterways, digital aids-to-navigation (AtoN) systems, national AIS (NAIS) registration and tracking platforms, marine communications transceivers such as the NEXUS data and voice transceiver, and advanced applications for security, search and rescue, law enforcement, illegal fishing detection, and environmental monitoring. The company, originally founded in 1987 and restructured as a public limited company in 2005 under its current name since 2016, is headquartered in Bath, United Kingdom, and operates primarily in a single marine technology segment across Europe, the Middle East, North America, Southeast Asia, and other regions. Recent developments include a transformational £31 million investment and financing package in October 2024 from shareholder Ocean Infinity to support a $213 million government contract for an integrated maritime surveillance system and three additional $210 million contracts, alongside post-year-end notification in 2025 of a substantial $200 million sovereign contract award that expands its active contract book to around £330 million; the company also reported 426% revenue growth to £78 million for the fiscal year ended June 30, 2025, with significant investments in AI-enhanced SRT-MDA system functionality, pre-production certification of the NEXUS transceiver, and capacity expansions in delivery, development, and product management teams to handle parallel implementations and sovereign partnerships.