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43 used for long ocean voyages with winds exceeding Beaufort force 8 (more than 40 knots) and wave heights above 13 ft. It is fitted with two Deep Blue i 1400 rpm electric motors from Torqeedo that are powered by two 64 kWh large-capacity batteries, giving the vessel six hours of running time on battery power alone.  It is intended for use in harbours or secluded or environmentally sensitive areas. However, most fishing trips last for days, so the design also includes two 25 kW high-voltage generators from Torqeedo. These provide power to drive the twin electric motors and recharge the battery bank.  Even when not operating on battery power alone, the noise-shielded 25 kWh generators are about 40% quieter than typical diesel engines. Lower noise levels mean less fatigue for the crew and potentially longer trips. A crew is still USVs | Insight systems Unmanned Systems Technology | August/September 2017 Trondheim Trawlers is developing a fully electric trawler (Courtesy of Trondheim Trawlers)