Software Radio Technology's products include tracking devices for use at sea and on rivers - an area being very strongly driven by new safety and security legislation worldwide. Devices for boats, ships, equipment, cargo items, and individuals. They are a world leader in this rapidly expanding field. See
marine division website
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"AIS facilitates a multitude of marine applications, from coastal security to port management, and from search-and-rescue to tracking of competitors in a yacht race. AIS is of huge benefit for vessels, from the largest ocean going tankers to the smallest of leisure craft.
There are 27 million vessels worldwide, 1.6 million kilometres of coastline, and 360 million square kilometres of ocean, all of which need to be monitored and managed for safety and security. AIS offers a solution to this need and following the 2002 IMO SOLAS mandate has become a key element of many national policies. SRT Marine Technology provides a complete range of AIS technology solutions and products targeting all AIS applications." (from the company website)
and from a July 2010 edition of Investors Chronicle:
".......Legislation is now in place for AIS (automatic identification systems) to be fitted on inland waterways in the European Union for up to 25,000 vessels in Turkey and up to 300,000 vessels in India following the water-borne Mumbai terrorist attacks. The host of other mandates are in the pipeline, including China, South Korea, Japan and the US. In total, there are 26m boats and ships worldwide that could be fitted with AIS technology. SRT�s products, according to management, lead the market on both price and performance and are beginning to gain traction...."