Ultra Electronics Holdings has been awarded a £27m contract for the Royal Navy's Sonar 2050 Technology Refresh Programme.Under the 10-year long deal, the firm's Sonar Systems division will deliver and support new hull mounted sonars for the Royal Navy's eight type-23 frigates."This is a significant opportunity and it demonstrates Ultra's continuing ability to supply and support cutting edge sonar systems to the Royal Navy. We look forward to working with the DE&S team on this programme," said group chief executive Rakesh Sharma.The technology to be installed on Royal Navy ships is aimed at improving surveillance systems against submarine and torpedo threats.