Ultra has announced that its Sonar 2150 has successfully completed its first-of-class sea acceptance trial onboard HMS PORTLAND. The trial took place over a number of days at sea, operating the sonar, detecting and tracking the “target”. Despite somewhat challenging weather conditions, the Ultra trials team successfully proved both active and passive performance in conjunction with Royal Navy personnel. The 2150 hull-mounted sonar replaces the Sonar Type 2050, which has been in service with the Royal Navy since the 1990s. It incorporates a state-of-the-art user interface to improve operator effectiveness and usability. The digital control of the outboard array minimises interference, reduces ship cabling requirements, aiming to maximise reliability and extends array maintenance intervals. The sonar will be fitted to Royal Navy Type 23 frigates.