The Israeli Navy has deployed its Seagull Multi-Mission Surface Vessel, equipped with an onboard Helicopter Long-Range Active Sonar (HELRAS) dipping sonar, during an exercise with the Hellenic Navy.
The Seagull, deployed in an anti-submarine warfare configuration, took part in the activities three months after completing the sea acceptance test (SAT) for a HELRAS dipping sonar that was successfully converted for operation onboard the vessel.
The performance of the Seagull demonstrated that "operating a dipping sonar onboard such a vessel significantly increases the operational working time while substantially enhancing detection capabilities and the effectiveness of anti-submarine warfare".
The L3-designed HELRAS DS-100 system is capable of operating at depths to 500 metres and has figure of merit (FOM) sufficient to achieve second convergence zone detection in deep water and unparalleled direct path coverage.
Low-strength targets moving at slow speeds are detected through the use of high-resolution Doppler processing and long shaped pulses. In addition to its long-range surveillance and search capabilities, the DS-100 is well suited to re-detection, target localisation and weapon delivery against deep and shallow water targets.
The Seagull autonomous multi-mission USV features switchable, modular mission payload suites and can perform, in addition to ASW, mine countermeasure missions, electronic warfare, maritime security, hydrography and other missions using the same vessel, mission control system and data links.