Ultra is a world-leader in torpedo defence for both submarines and surface ships, with systems currently operational with the UK Royal Navy and about to enter service with the Turkish Navy. Using a combination of passive and active sonars systems, Ultra’s technology provides platforms with the ability to detect and classify all known torpedoes. To counter the identified threats, the system automatically recommends the optimum evasion course, whilst simultaneously using both towed and expendable countermeasures to confuse and defeat the threat.

Ultra’s Sea Sentor Surface Ship Torpedo Defence (SSTD) system can be either standalone or incorporated into the ISS. As a stand-alone system, it is designed to be operated by minimally-trained operators and provide simple operator actions on sounding a torpedo alert. Torpedoes can be detected passively via the VDS or by sonobuoys if the multistatic active (MSA) capability is incorporated into the system. Ships steaming through a previously laid sonobuoy field can therefore re-use the same field for area torpedo defence at no additional cost or effort. Torpedo countermeasures, being based on sonobuoy technology, could also be deployed by organic assets, e.g. helicopters or unmanned air systems, well away from threatened ships.