Role & capabilities
- Maritime surveillance
- Modular sensing
- Autonomous navigation
- Primary domain
- Sea surface
- System type
- Uncrewed surface vessel
- Developer / manufacturer
- Sirehna / Couach
- Origin / production countries
- France
- Other names
- SEAQUEST S; Seaquest-S
- Variants / configurations
- Not distinguished in reviewed sources
- Operators / programme customers
- French and allied naval exercise participants — fleet acceptance not established
Evidence & current status
Manufacturer claims are distinguished from procurement and acceptance evidence; undisclosed figures have not been estimated.
Seaquest-S combines a Couach-built hull with Sirehna's maritime autonomy and integration work. The current 930 ISR configuration is a small waterjet vessel designed to carry different surveillance packages and to operate from shore or a supporting ship. Its navigation sensors, communications links and mission mast are presented as parts of a modular platform rather than a single fixed naval fit.
The programme has progressed beyond an exhibition model. Sirehna identifies Dronathlon and Baltic Sentry among its activities, while Naval Group's March 2026 review describes 2025 multinational demonstrations and REPMUS experimentation. These records establish trial participation and naval relationships. They do not, by themselves, establish fleet quantities or acceptance of every advertised mission package.
The technical baseline here is the current Seaquest-S 930 page. That page gives two different basic range figures in its headline and detailed table, and also mentions an extended configuration. Range therefore needs configuration clarification before it can support direct comparisons. Navigation and automatic launch-and-recovery limits are also different: a vessel's ability to remain at sea should not be confused with the conditions in which its handling system can be used.
Sourced specifications
Figures apply to the named configuration. Maximum values are not guaranteed operating performance.
| Specification | Reported value | Context & source |
|---|---|---|
| Configuration | 930 ISR modular small USV | Supplier-published configuration; payload and operating conditions affect performance. Source ↗ |
| Hull / propulsion | 350 hp waterjet | Supplier-published configuration; payload and operating conditions affect performance. Source ↗ |
| Dimensions | 9.30 m length; 2.90 m beam | Supplier-published configuration; payload and operating conditions affect performance. Source ↗ |
| Displacement / mass | Less than 6 tonnes | Supplier-published configuration; payload and operating conditions affect performance. Source ↗ |
| Payload | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source ↗ |
| Endurance | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source ↗ |
| Range | Headline 200 nautical miles; detailed table 220 nautical miles, up to 530 | Unresolved discrepancy within the supplier page; extended-configuration conditions not specified. Source ↗ |
| Speed | 35 knots maximum | Supplier-published configuration; payload and operating conditions affect performance. Source ↗ |
| Sea state / environment | Navigation: sea state 5 | Supplier-published configuration; payload and operating conditions affect performance. Source ↗ |
| Sensors | INS, GNSS and DVL; modular integrated sensor mast | Supplier-published configuration; payload and operating conditions affect performance. Source ↗ |
| Communications / control | Remote/autonomous operation; radio, satellite, cellular and Wi-Fi links | Supplier-published configuration; payload and operating conditions affect performance. Source ↗ |
| Launch / deployment | Automatic launch and recovery advertised up to sea state 3 | Supplier-published configuration; payload and operating conditions affect performance. Source ↗ |
Publication history
- — Added in the September 2026 global coverage review, with sources, configuration limits and explicit data gaps.
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Follow the evidence
Source types identify who makes the claim. Programme milestones and supplier statements should be read in context.