Role & capabilities
- Seabed mapping
- Mine detection support
- Remote underwater inspection
- Primary domain
- Sea surface
- System type
- Uncrewed surface vessel
- Developer / manufacturer
- Thales-led MMCM consortium
- Origin / production countries
- United Kingdom / France
- Other names
- Maritime Mine Counter Measures USV; RNMB Apollo; Ariadne; Adventure
- Variants / configurations
- Apollo — prototype and evaluation boat; Ariadne — first UK production primary system; Adventure — second UK production primary system; French MMCM configuration
- Operators / programme customers
- Royal Navy — Ariadne in service; Adventure delivered; French Navy — MMCM programme participant
Evidence & current status
Manufacturer claims are distinguished from procurement and acceptance evidence; undisclosed figures have not been estimated.
MMCM is an Anglo-French mine-countermeasure system managed through OCCAR, with Thales leading the industrial team. Its surface vessel works with a portable operations centre and offboard survey or inspection equipment. It is therefore best understood as a delivered system of vessels, sensors and control infrastructure rather than a boat acting alone.
The Royal Navy reported Adventure's handover in April 2026 and explicitly described sister vessel Ariadne as already in service. OCCAR had announced delivery of the second UK primary system in March. These records update the older forecast that the first production capability would arrive during 2026.
Apollo belongs to the earlier trial and evaluation stage. A December 2025 parliamentary answer said that this prototype had returned to the manufacturer for maintenance and critical updates, with a later 2026 return anticipated. The production deliveries do not prove that Apollo has completed that separate process.
The published sea-state limit concerns the MMCM mission system, not an unrestricted transit or survival rating. Public sources reviewed here do not establish a single numerical hull specification covering all French, British, prototype and production boats. Those configurations remain distinct in the catalogue.
Sourced specifications
Figures apply to the named configuration. Maximum values are not guaranteed operating performance.
| Specification | Reported value | Context & source |
|---|---|---|
| Configuration | USV with offboard mission payloads and portable operations centre | Supplier-published configuration; payload and operating conditions affect performance. Source |
| Hull / propulsion | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source |
| Dimensions | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source |
| Displacement / mass | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source |
| Payload | Survey sonar and remotely operated inspection equipment | Supplier-published configuration; payload and operating conditions affect performance. Source |
| Endurance | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source |
| Range | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source |
| Speed | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source |
| Sea state / environment | Mine-countermeasure system designed for operation up to sea state 4 | Mission-system design limit; not a general survival or transit certification. Source |
| Sensors | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source |
| Communications / control | Remote supervision from portable operations centre | Supplier-published configuration; payload and operating conditions affect performance. Source |
| Launch / deployment | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source |
Documented milestones
Royal Navy confirms Adventure handover
The operator described Ariadne as in service and Adventure as delivered.
Read the announcementSecond UK system delivery announced
OCCAR confirmed the second UK MMCM primary system.
Read the announcement
Publication history
- — Published reference update.
Suggest a correction to this entry
Follow the evidence
Source types identify who makes the claim. Programme milestones and supplier statements should be read in context.