Sea Baby
| Sea Baby | |
|---|---|
| Type | Unmanned surface vehicle |
| Place of origin | Ukraine |
| Service history | |
| Used by | Security Service of Ukraine in conjunction with the 385th USV Brigade |
| Wars | Russo-Ukrainian War |
| Production history | |
| Unit cost | 8.5 million hryvnias (equivalent to $245,581 in 2025) |
| Produced | 2023-present |
| Specifications | |
| Length | 6 m (20 ft) |
| Width | 2 m (6.6 ft) |
| Height | 0.6 m (2.0 ft) (above waterline) |
Main armament | Explosive warhead (up to 850 kilograms (1,870 lb)) or 6 × RPV-16 thermobaric grenade launchers |
Operational range | at least 1,000 km (620 mi) |
| Maximum speed | 90 km/h (56 mph) |
The Sea Baby (Ukrainian: Морський малюк) is a multipurpose unmanned surface vehicle (USV) developed for use by the Security Service of Ukraine (SBU) during the Russian invasion of Ukraine (2022 to present). It is able to carry an explosive payload for use in self-destruct attacks, or equipped for more specialised uses, for instance to strike static targets such as ships docked in ports, or to lay mines.
Early models of the Sea Baby were designed in July 2022. Models from late 2023 used redundant communications systems and carried explosive warheads up to 850 kilograms (1,870 lb). It was inducted into the 385th USV Brigade in August 2023. In January 2024 the SBU revealed a version of the Sea Baby equipped with thermobaric launchers.
In July 2023, two Sea Baby USVs struck the Crimean Bridge. Other attacks by Sea Baby USVs include a claimed strike on the corvette Samum in September 2023, damage to the Pavel Derzhavin the following month, a strike on the Vladimir Kozitsky in December 2023, and an attack on Crimea in December 2024. On 28 November 2025, Sea Baby USVs were used to attack Russian shadow fleet ships in the Black Sea. In December 2025, the SBU claimed a Kilo-class submarine in the Port of Novorossiysk was struck by an unmanned underwater vehicle dubbed the Sub Sea Baby.