South Korea's LIG Nex1 showcased a sea demonstration of its prototype Hae Gum (Sea Sword) unmanned surface vessel (USV) to the public for the first time at Changwon Marine Defense Exhibition 2019 held in Changwon city from 20-22 June.
The Sea Sword USV adopts a high-speed monohull design - constructed from fibre-reinforced plastic - and measures 8 m long and displaces approximate 3 tonnes. The sea vehicle is equipped with a diesel engine and a waterjet propulsion system that enables it to achieve a stated maximum speed of 40 kt.
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South Korea's LIG Nex1 is developing the Hae Gum USV to meet an expected Korean navy requirement
According to LIG Nex1, the Sea Sword has an operational endurance of up to eight hours at 15 kt and has a control radius of up to 12 km.