WASS Submarine Systems is presenting its BLACK ARROW A244/S Mod.4 lightweight torpedo in Southeast Asia for the first time, marking its regional debut at the ongoing Defence Services Asia (DSA) exhibition.
The company is positioning the Mod.4 as its latest lightweight torpedo, targeting upgrade and replacement requirements among existing A244/S operators, while also targeting new lightweight torpedo programmes across Southeast Asia. The debut comes as regional navies continue to prioritise anti-submarine warfare capabilities amid increasing underwater activity and submarine acquisitions.
The BLACK ARROW A244/S Mod.4 represents the latest evolution of the A244/S torpedo series. It draws on WASS technology developed across multiple programmes, including the A244/S Mod.3, the MU90 lightweight torpedo, and the BLACK SHARK heavyweight torpedo.
The Mod.4 incorporates enhanced digital processing, improved guidance and enhanced counter-countermeasure capabilities. The propulsion system has also been refined to improve overall performance. According to the company, development trials were completed in 2025.
The Mod.4 variant incorporates improved digital processing, guidance, and counter-countermeasure capabilities. Improvements have also been made to the propulsion unit. The A244/S Mod.4 can be deployed from a range of platforms, including surface combatants, fixed-wing aircraft, helicopters and unmanned systems. It can be fitted with either a direct-impact or omnidirectional warhead configuration.
The A244/S lightweight torpedo family is in service with over 16 navies worldwide, including regional operators such as Malaysia, Indonesia and Singapore. WASS Submarine Systems is part of Fincantieri following its acquisition from Leonardo in 2025.
In December 2025, the company secured a contract from the Indian Navy for supply of BLACK SHARK ADVANCED heavyweight torpedoes for six SCORPENE-class submarines. The contract, valued at over €200 million, is the largest in the company’s history. Deliveries under the Indian contract are scheduled between 2028 and 2030.
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