First uncrewed mine countermeasures vessel delivered to UK Royal Navy

UK’s first vessel for detecting and destroying sea mines has been delivered to the Royal Navy. The new technology enables mines to be detected rapidly and eliminates the need for sailors to enter dangerous mined areas.

British defence jobs have been boosted and British sailors will be better protected following delivery of the first end-to-end autonomous UK mine hunting vessel, known as ‘Ariadne’, which will boost as Royal Navy capabilities, said UK Ministry of Defence.

The vessel was designed and manufactured in the UK under a £184 million deal with Thales UK, which supports more than 200 jobs across Somerset, Plymouth, Portsmouth, and Scotland. 

The autonomous system, which includes the Unmanned Surface Vessel (USV) RNMB ARIADNE, enables the Royal Navy to locate and destroy sea mines faster and more efficiently, without putting personnel at risk.  

RNMB ARIADNE is 12 metres long, the same size as an average bus, and can be deployed from a harbour or mother ship to hunt the seabed for mines using the Thales TSAM system, one of the world’s most sophisticated towed sonars. It is likely to be used both at home and overseas.  

This announcement comes following the Prime Minister’s commitment to increase defence spending to 2.5% of GDP from 2027, with a clear ambition to hit 3% of GDP in the next Parliament.   

"This delivery marks a significant milestone in our mine-hunting capabilities and the autonomous technology will keep Britain and our Royal Navy sailors safer by identifying & removing mines. It has also supported hundreds of skilled jobs across UK industry – a clear demonstration that defence is an engine for economic growth," - said Minister for Defence Procurement and Industry, Rt Hon Maria Eagle MP.

The programme forms part of a joint UK-France initiative with a total contract value of £361 million, managed by the Organisation for Joint Armament Co-operation (OCCAR).  

The delivery is part of the Defence Equipment and Support (DE&S)-led Mine Hunting Capability Programme, which aims to transition from conventional Mine Counter Measures Vessels to Maritime Autonomous Systems.  

Following successful trials of the prototype vessel RNMB APOLLO in the Firth of Clyde in September 2024, Royal Navy personnel will now undertake training with Thales’ support before conducting a thorough Operational Evaluation and beginning to deploy MMCM systems on active duty.  

The Royal Navy plans to gradually phase out conventional crewed mine hunting vessels as additional autonomous systems are delivered over the next five years or so. This transition represents a fundamental shift in naval operations, creating additional skilled employment opportunities in the maritime technology sector while establishing the UK as a leader in autonomous maritime systems.

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