Role & capabilities
- Remote maritime operations
- Modular mission equipment carriage
- Primary domain
- Sea surface
- System type
- Uncrewed surface vessel
- Developer / manufacturer
- Security Service of Ukraine development programme
- Origin / production countries
- Ukraine
- Other names
- Морський малюк; SeaBaby
- Variants / configurations
- Earlier surface Sea Baby configurations; 2025 enlarged surface generation
- Operators / programme customers
- Ukraine — Security Service / SBU
Evidence & current status
Operational status and performance are attributed to a wartime operator. The source does not support a complete independently verified specification or a common configuration for all Sea Baby craft.
Sea Baby is the surface-drone programme associated with Ukraine's Security Service, known as the SBU. It is separate from the MAGURA family operated by defence intelligence. Public statements describe continuing changes in hulls, propulsion and mission equipment, so the name should be read as an evolving programme rather than a single production specification.
On 22 October 2025 the SBU displayed a newer generation and stated that updated boats had already been used in the Black Sea. The announcement reported a larger range and payload than earlier public descriptions. Those figures are attributed to the operator, not treated as independently measured performance or assigned retrospectively to older boats.
The source also displayed different equipment configurations, confirming that mission fits vary. It did not publish a complete naval-architecture data sheet or identify every industrial supplier. This profile consequently preserves gaps in dimensions, displacement and endurance instead of deriving them from photographs. Surface Sea Baby is also distinct from separately named underwater projects; an underwater vehicle should receive its own domain and record.
Sourced specifications
Figures apply to the named configuration. Maximum values are not guaranteed operating performance.
| Specification | Reported value | Context & source |
|---|---|---|
| Configuration | Uncrewed surface-vessel family with multiple mission fits | Operator presentation. Source ↗ |
| Hull / propulsion | 2025 generation described as having more powerful engines | No engine model or rating established. Source ↗ |
| Dimensions | Not established in the reviewed public sources. | Public data gap; no estimate or neighbouring variant value substituted. Source ↗ |
| Displacement / mass | Not established in the reviewed public sources. | Public data gap; no estimate or neighbouring variant value substituted. Source ↗ |
| Payload | Up to 2,000 kg for the 2025 generation | Operator claim; not a figure for every older Sea Baby. Source ↗ |
| Endurance | Not established in the reviewed public sources. | Public data gap; no estimate or neighbouring variant value substituted. Source ↗ |
| Range | More than 1,500 km for the 2025 generation | Operator claim; conditions not disclosed. Source ↗ |
| Speed | Not established in the reviewed public sources. | Public data gap; no estimate or neighbouring variant value substituted. Source ↗ |
| Sea state / environment | Not established in the reviewed public sources. | Public data gap; no estimate or neighbouring variant value substituted. Source ↗ |
| Sensors | Not established in the reviewed public sources. | Public data gap; no estimate or neighbouring variant value substituted. Source ↗ |
| Communications / control | Uncrewed operation; updated navigation system reported | Technical architecture not fully disclosed. Source ↗ |
| Launch / deployment | Not established in the reviewed public sources. | Public data gap; no estimate or neighbouring variant value substituted. Source ↗ |
Documented milestones
New surface generation presented
SBU publicly described upgraded boats and stated prior Black Sea use.
Read the announcement ↗
Publication history
- — Added sourced land and maritime coverage with domain-specific evidence and limitations.
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Follow the evidence
Source types identify who makes the claim. Programme milestones and supplier statements should be read in context.
- SBU new-generation presentation, 22 October 2025 (opens in a new tab)Government / operator