First UK autonomous XL military submarine is put through in-water testing

BAE Systems in the UK has demonstrated the operation of its new XLAUV (Extra Large Autonomous Underwater Vessel), the Herne, during an assessment process off the English south coast near Portsmouth. The Herne XLAUV was designed to give navies a sturdy “off board sensor” that could inspect undersea infrastructure, support anti-submarine warfare and deliver covert subsea surveillance.