


| Model | Silent Science Boat MK 5 |
| Announced | October 2025 |
| launched | October 2025 (deployed on HX ships MS Fram & MS Fridtjof Nansen) |
| Boat Type | Small electric expedition / science support boat |
| Others | IAATO-compliant design for Arctic and Antarctic operations |
| Battery Capacity | Estimated 20–61 kWh (based on RAD 40 compatibility) |
| Electric motors | RAD Propulsion RAD 40 (40 kW / ~60 hp equivalent) |
| Charger | 400V architecture, fast-charge capable |
| Range | Depends on battery configuration (estimated short-range operations) |
| Others |
180° steering for tight manoeuvres Drive-by-wire control (RADBus system) IP67-rated waterproof propulsion unit |
| Guest capacity | Small research or guest science groups |
| Layouts | Open RIB / small expedition boat style |
| Others | Configurable for observation, data collection, or sample transport |
| Tender garage | Stored on expedition ship deck or davit |
| Others |
Ultra-quiet operation for marine wildlife studies Zero-emission propulsion for eco-sensitive regions |
| Builder | HX Expeditions (vessel operator); propulsion by RAD Propulsion (UK) |
| Launch milestone | October 2025 rollout aboard MS Fram and MS Fridtjof Nansen |
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