Loki Dynamics

Loki Dynamics unveiled the MD 3.0 diesel engine at Seawork 2026 in Southampton on 11 June 2026, the first engine of its kind purpose-built for uncrewed surface vessels. Loki acts as the UK representative of MD Powertrain, the Swedish engine developer behind the MD 3.0. The launch took place in Seawork's inaugural Autonomous and Remote-Operated Vessel Pavilion.

Loki Dynamics operates as the UK commercial and distribution Arm for MD Powertrain's marine diesel line. MD Powertrain developed the MD 3.0 with integrated autonomous control interfaces and a compacted aluminium block optimised for the 24-hour duty cycles that uncrewed operations demand, a profile that conventional marine diesels designed for crewed vessels with variable manual throttle management cannot reliably sustain under warranty. No contracts or partnerships were disclosed at the Seawork launch; availability is from August 2026.

The commercial significance is that a USV builder can now specify a warranted engine designed for autonomous operation from a catalogue rather than commissioning bespoke propulsion engineering. That removes one of the two primary barriers the Society of Maritime Industries identified in April 2026, alongside standardised control interfaces, that have kept UK maritime-autonomy firms below commercial scale. The dual-use application is clear: the MD 3.0's power profile is appropriate for coastal patrol, mine-hunting support, and offshore inspection USVs.