LIG Nex1 pushes maritime innovation with Sea Sword III at KADEX 2024.

At this year's KADEX defense expo, South Korea's LIG Nex1 took center stage with its innovative Sea Sword III, an unmanned surface vehicle (USV) that has the potential to reshape naval warfare.
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LIG Nex1' Sea Sword III Unmanned Surface Vehicle in South Korea. (Picture source: Army Recognition Group)

This sophisticated platform, initially developed for coastal defense and reconnaissance, is now being eyed for broader military applications amidst increasing maritime tensions globally.

The Sea Sword III, equipped with advanced AI-driven autonomous navigation systems, offers real-time adaptability in challenging maritime environments.

Whether conducting surveillance in contested waters or supporting rapid response missions, the vehicle’s capability to operate independently—without onboard personnel—significantly reduces risks to human life in combat zones. Designed for versatility, it can be optionally manned, enhancing its role in various operations from coastal defense to forward reconnaissance.

The Sea Sword III's performance in recent trials demonstrated its operational flexibility. It can reach speeds up to 35 knots, powered by twin diesel engines, and its 12.7mm machine gun and guided 70mm rockets provide potent firepower for engaging surface threats.

One of the key highlights of the Sea Sword III's development is its ability to operate autonomously in harsh sea conditions, up to Sea State 4.

Additionally, its surveillance systems, which include infrared and laser targeting, make it a formidable platform for identifying and tracking enemy vessels even in adverse conditions. These attributes are becoming increasingly relevant in areas like the South China Sea, where the risk of naval confrontations is rising.

LIG Nex1's focus on autonomous systems, such as the Sea Sword III, reflects a broader shift in naval warfare towards unmanned platforms that offer increased operational efficiency and reduced costs. The integration of AI for navigation and target tracking also positions the Sea Sword III as a key asset for future conflicts, where unmanned systems are expected to play a dominant role in surveillance and combat​.