Australia, Nov. 4 -- The Royal Australian Navy's Hunter class frigates will be equipped with state-of-the-art defence systems following BAE Systems Maritime Australia's decision to award Ultra Maritime a contract for its Surface Ship Torpedo Defence (SSTD) system.Each Hunter class frigate will be equipped with Ultra Maritime's world-leading technology, providing critical defence against torpedo threats using advanced acoustic detection and integrated countermeasures-enhancing the fleet's anti-submarine warfare capability and safeguarding Australia's maritime interests.Incorporating a sonar and two methods of decoy, the SSTD system uses acoustic signatures to provide advice on the most effective tactics-such as zig-zags or hard turns-to defe...