The Royal Navy’s mine countermeasures mothership RFA Lyme Bay departed Gibraltar on May 26 carrying a suite of autonomous and uncrewed minehunting systems as part of a multinational effort to prepare for potential mine clearance operations in the Strait of Hormuz.
The deployment marks the first time the Royal Navy has operationally integrated an uncrewed surface vessel into the floodable dock of a Bay-class vessel for a live mission — a capability milestone the service has been working toward since reactivating and refitting Lyme Bay following the start of Operation Epic Fury in late February.
The centerpiece of the embarked capability is RNMB Ariadne, a 12-meter uncrewed surface vessel designed and built in the UK to detect and neutralize sea mines without placing personnel in minefields. Ariadne completed operational trials off Portland, Dorset, where its Thales TSAM towed sonar — assessed against a seabed target previously surveyed by HMS Magpie — was evaluated by the Royal Navy’s Maritime Capabilities, Trials and Assessment team alongside Yankee Squadron, one of two specialist units within the Mine Threat Exploitation Group. Following the trials, Ariadne was transported to Gibraltar and successfully maneuvered into Lyme Bay’s floodable dock, which was then drained and the vessel secured on an internal cradle. The docking was conducted by members of Yankee Squadron with Gibraltar Squadron providing force protection.
More than 100 minehunting personnel from the Royal Navy’s diving and threat exploitation group and mine and threat exploitation group are embarked. Commander Dan Herridge, commanding officer of the Mine Threat Exploitation Group, described the mission’s technical foundation in the Royal Navy’s announcement. “Personnel from MTXG will embark in RFA Lyme Bay with a clear purpose: to deliver a credible, modern Mine Countermeasures capability,” he said. “Enabled by the Minehunting Capability Programme, they will employ cutting-edge sensors delivered through autonomy and AI to detect threats to the maritime community in some of the world’s most challenging environments.”
The UK Ministry of Defence characterized the deployment as reflecting a broader shift in how the Royal Navy intends to field capability. “RFA Lyme Bay’s potential deployment to the Gulf with advanced uncrewed minehunting systems is demonstrative of a shift towards agile, high-tech maritime capabilities,” the MOD said in a statement. “The mission showcases rapid deployment of innovation, developed with UK industry in partnership by Royal Navy and National Armaments Director teams, to secure vital shipping lanes and strengthen defences against evolving maritime threats.”
The UK and France are planning the operation as a strictly defensive mine countermeasures mission. British officials have indicated that Lyme Bay and its embarked systems will not begin active mine clearance until a ceasefire agreement between the US and Iran is in place. The Royal Navy has described the effort as part of its broader transition toward a hybrid fleet that pairs conventional crewed warships with uncrewed and autonomous systems to extend operational reach while reducing risk to personnel.
