SRT Marine Systems plc, together with its subsidiaries, develops and supplies automatic identification system (AIS) based maritime domain awareness technologies, products, and systems. It offers Digital AtoN Systems (DAS), a system that enhance port and waterway traffic control and navigation safety; NAIS-National Vessel Tracking System, a vessel identification and tracking system solution; MDM-Coastguard, a maritime domain surveillance system; VMS-Fisheries, a system for monitoring, managing, and controlling fishing vessels; and VTS-Ports and Waterways, a monitoring, managing, and controlling system for maritime infrastructure, ports, and waterways. The company also provides maritime communication and navigation transceivers. It serves mariners, infrastructure owners, coast guards, and fishing authorities in the United Kingdom, the rest of Europe, the Middle East, North America, South East Asia, and internationally. The company was formerly known as Software Radio Technology Plc and changed its name to SRT Marine Systems plc in July 2016. SRT Marine Systems plc was founded in 1987 and is based in Bath, the United Kingdom.