Swedish Armed Forces complete sea trials of large UUV demonstrator

Development of the vehicle was aimed at assessing underwater capabilities for the future and supporting operations alongside current naval platforms, including submarines.

Mats Wicksell, head of Saab's naval business area, said it could contribute to increased endurance, enhanced situational awareness and strengthened underwater capabilities.

FMV awarded Saab the SEK60 million (US$6 million) development contract in August 2025. With FMV leading the project, Saab was appointed prime contractor, responsible for the vehicle's design, construction and testing.

Initially, the vehicle was intended as a sensor platform to monitor seabed infrastructure and detect threats below the surface. Weapons were excluded from its design during the first phase.

Saab identified the multi-mission portal on the Blekinge-class submarine as a means of deploying and retrieving the drone.