Ukraine's Global Mark Unveils Sea Trident ST-1000 Extra-Large Uncrewed Underwater Vehicle with 1,000 kg Payload Capacity
Ukrainian defense technology company Global Mark has officially unveiled its first Extra-Large Uncrewed Underwater Vehicle (XLUUV), the Sea Trident ST-1000, at Eurosatory 2026 in Paris. The steel-hulled, elliptical-shaped UUV measures 10 meters in length, weighs 10 tonnes, carries up to 1,000 kg of payload, and has a range of 2,000 nautical miles. Mission modes include kamikaze strikes, logistics delivery, enemy UUV interception, and FPV drone carrier operations.
Highlights
- Global Mark 在 2026 年巴黎 Eurosatory 防務展發表烏克蘭首款 XLUUV「Sea Trident ST-1000」。
- Sea Trident ST-1000 艇長 10 公尺、重 10 噸，最大酬載達 1,000 公斤，航程 2,000 海里。
- 該艇具備神風打擊、後勤投送、攔截敵方 UUV 及搭載 FPV 無人機等四種任務模式。
- Sea Trident ST-1000 可裝入標準 ISO 貨運集裝箱，大幅提升公路機動部署能力。
- Global Mark 原以空中無人機與電子戰系統聞名，此次跨足水下領域，反映烏克蘭戰時國防創新持續加速。
Ukraine's Global Mark Unveils Sea Trident ST-1000 XLUUV
Ukrainian defense technology company Global Mark made its underwater debut at Eurosatory 2026 in Paris, officially presenting its first Extra-Large Uncrewed Underwater Vehicle (XLUUV): the Sea Trident ST-1000.
From the Air to the Deep
Global Mark has built its reputation on aerial drones and high-performance electronic warfare (EW) systems. The Sea Trident ST-1000 marks the company's expansion into the maritime undersea domain. The steel-hulled, elliptical-shaped vessel is designed for high-intensity strike missions, logistics resupply, and suppression of enemy underwater threats. Critically, its dimensions are sized to fit inside a standard ISO shipping container, enabling rapid road-mobile deployment.
Core Design Philosophy
According to Global Mark, the Sea Trident is an autonomous underwater vehicle optimized for long-range operations in maritime environments, capable of delivering up to 1,000 kg of payload precisely to strategic targets. The entire system is tailored to the demands of modern asymmetric naval warfare, with an emphasis on low observability and fully autonomous operation.
The vehicle is capable of traveling submerged at depths of up to 5 meters below the surface, allowing it to covertly penetrate contested or enemy waters with a minimal detection signature — making it well-suited for clandestine mission profiles.
Four Mission Modes
The Sea Trident ST-1000 is positioned as a multi-role platform with four primary mission configurations:
- Kamikaze / Strike: Executing loitering munition-style attacks against enemy vessels or infrastructure
- Logistics & Payload Delivery: Covert underwater transport of supplies or specialized equipment
- Interception & Destruction of Enemy UUVs: Active hunting and neutralization of adversary underwater vehicles
- FPV Drone Carrier: Deploying and releasing FPV drones to extend operational reach beyond the waterline
Sea Trident ST-1000 Specifications
| Specification | Value |
|---|---|
| Length | 10 m |
| Width | 2 m |
| Height | 1.5 m (excluding mast components) |
| Weight | 10 tonnes |
| Range | 2,000 nautical miles |
| Speed | 6 knots (cruise) / 10 knots (max) |
| Operating Depth | 60 m |
| Payload (warhead) | 1,000 kg |
Industry Perspective
The unveiling of the Sea Trident ST-1000 underscores Ukraine's accelerating defense innovation under wartime pressures, now extending well beyond aerial drones into the undersea domain. Its ISO container-compatible design significantly enhances strategic mobility and rapid force projection. Combined with a 2,000-nautical-mile range and a 1,000 kg payload capacity, the system represents a credible asymmetric deterrent in contested maritime environments.
Original reporting source: Naval News
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