A Clear Path to Better Efficiency

Nautinator yachts use a serial hybrid driveline with electric motors and diesel engines on shared shafts, connected by electromagnetic clutches. This flexible system powers dual shafts (electric + diesel) and allows seamless switching between power sources. Below is a step-by-step comparison showing how each configuration improves efficiency over a traditional diesel trawler.

1. Classic Diesel Trawler

(Baseline)A standard 45-ton, 18m diesel trawler cruising at 10 knots consumes 36.6 liters per hour (l/h). It is reliable but fuel-hungry and produces high emissions.2. Nautinator Hull on Diesel PropulsionUsing our optimized hull (Tanto bow, CombiHull, and other modifications) with conventional diesel engines, fuel consumption drops to 17.2 l/h at 10 knots.
Fuel savings: 53% compared to the classic trawler.

3. Electric Mode

(Generators, Solar, Batteries)Switching to electric motors powered by generators, solar panels, and batteries, consumption falls to 4.8 l/h at 1–7 knots.
Fuel savings: 73% compared to the trawler at similar speeds.
This mode is quiet and relies heavily on renewable energy.

4. Diesel-Boosted Electric Mode

For higher speeds (9–15 knots), diesel engines assist the electric motors. Consumption is 18.7 l/h.
Fuel savings: 49–53% compared to the classic trawler, depending on exact speed.

5. Pure Electric (No Generators)

Running solely on batteries and solar (no generators running), the yacht uses zero fuel up to 4–7 knots.
Fuel savings: 100%.
This is ideal for short, silent legs or calm conditions.

6. Kite Propulsion

Adding the LibertyKite wind-assist system allows fuel-free propulsion at 1–8 knots (depending on wind).
Fuel savings: 100% when the kite is effective.

7. Full Quad System

Combining the optimized hull with the full hybrid setup (electric motors, diesel, solar, batteries, and kite) delivers the best overall result. At 7 knots, consumption is just 4.6 l/h.
Fuel savings: 74% compared to the classic trawler.Why Nautinator Stands Out

  • Hull-first approach: The majority of savings (up to 73% at low speeds) comes from the hull design itself, before adding hybrid or kite systems.
  • Flexible hybrid system: Dual shafts with electromagnetic clutches let you switch power sources instantly and efficiently.
  • Step-by-step gains: Each configuration builds logically on the previous one.
  • Practical sustainability: You get low-speed zero-fuel cruising and higher-speed capability without sacrificing range or safety.

These results are based on detailed simulations and engineering data. Nautinator yachts prove that efficiency and real-world usability can go hand in hand.

Diesel vs Electric