Spanish Shipbuilder Navantia Unveils 75-Meter Autonomous Warship "LASV75"

The Emergence of Autonomous Warships to Complement Manned Vessels Spanish shipbuilding giant Navantia has unveiled the conceptual design for the autonomous warship “LASV75,” which operates without any onboard crew. LASV75 stands for Large Autonomous Surface Vessel, and as its name suggests, it is designed as a large 75-meter ocean drone. Developed in line with the concept of a “hybrid navy,” which envisions coordinated operations between manned and unmanned warships, it has the potential to fundamentally transform naval force structures.

Specifications and Design Philosophy The LASV75 measures 75 meters in length, roughly half the size of the UK’s Type 45 destroyer. Its displacement is around 1,000 tons, comparable to the River-class patrol vessels of the Royal Navy. Its most distinctive feature is the complete absence of a bridge or crew accommodations. The entire hull is optimized for mission execution, free from the limitations of habitability and human ergonomics inherent in manned vessels. Navantia’s UK division is responsible for its development, with the company emphasizing that the design enables quick and large-scale construction. While the cost is reportedly much lower than manned warships, details regarding construction timelines or expenses remain undisclosed.

Modular Design for Flexible Mission Adaptation Another key feature of the LASV75 is its modular design. This allows payloads and engineering systems to be flexibly altered based on missions, enabling customization of power systems, weaponry, and sensor capabilities. Promotional images depict the vessel equipped with several maritime containers. These containers are widely used by navies to rapidly add functionalities to ships, and the same approach is expected to be utilized for the LASV75. This makes it possible to quickly switch the vessel’s roles—from reconnaissance missions to anti-submarine warfare or patrol operations—using the same base hull.

Electric Propulsion System and Advanced Sensors The propulsion system utilizes Integrated Full Electric Power and Propulsion (IFEP), a mechanism where diesel generators drive electric motors to supply all onboard power. The exhaust outlets are positioned near the waterline, eliminating the need for traditional smokestacks. This design is expected to reduce infrared signatures and enhance stealth capabilities. The ship is also equipped with a mast capable of housing multiple sensor arrays, allowing for the deployment of mission-specific sensors.

Alignment with the Royal Navy’s “Hybrid Navy” Concept The LASV75 is designed to align with the “hybrid navy” concept being promoted by the Royal Navy. This concept aims to create an efficient and scalable naval force by combining manned and unmanned vessels. According to Navantia, the LASV75’s size ensures sufficient range and endurance for task group operations at sea, making it suitable for escort missions and the protection of underwater infrastructure around the UK. Specific tasks envisioned include safeguarding undersea infrastructure such as cables and pipelines and tracking Russian submarines. This aligns with the Royal Navy’s “Atlantic Bastion Strategy,” which focuses on the defense of undersea infrastructure in the North Atlantic. The strategy highlights the need for unmanned vessels to patrol western waters, and the LASV75 is seen as a potential candidate to fulfill the requirements of the Type 92 sloop role outlined in the strategy.

Trends in Autonomous Warships and Future Outlook The unveiling of the LASV75 is part of a global trend toward greater autonomy and unmanned systems in the military domain. Navies worldwide are increasingly focusing on developing unmanned surface vessels to address rising operational costs and personnel shortages. Navantia’s LASV75 is designed not to replace existing manned warships but to complement them. By delegating dangerous or challenging missions to unmanned vessels, manned warships can concentrate on more complex tasks that require human judgment—this division of labor lies at the heart of the “hybrid navy” concept. However, the LASV75 is currently in its conceptual stage, and it remains unclear whether it will fully meet the Royal Navy’s operational requirements. Navantia has acknowledged that the design does not yet perfectly align with the current specifications. The development of a prototype, sea trials, and potential adoption by various naval forces will be closely watched. The era of autonomous warships is steadily approaching. Whether the LASV75 will lead the charge or fall behind emerging competitors remains uncertain, but the technological race shaping the future of naval warfare is quietly but surely advancing.