SRT Marine Systems plc, together with its subsidiaries, develops and supplies automatic identification system (AIS) based maritime domain awareness technologies, products, and systems.

The company offers systems, such as DAS-Digital ATON, 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.

It also provides AIS Aids, VMS, search and rescue, vessel, and navigation transceivers; small boat trackers; fishing buoy trackers; base stations; display and data solutions; satellite data solutions; OEM AIS transceivers; and AIS transceiver modules, as well as develops and sells maritime communication products and systems.

The company's solutions are used in a range of maritime applications, such as maritime safety, security, management, and efficiency in waterways, ports and infrastructures, coasts, and open ocean. It serves mariners, infrastructure owners, coast guards, and fishing authorities in the United Kingdom, 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 headquartered in Bath, the United Kingdom. It listed on the AIM market in 2005 under the ticker SRT.