A retractable mast with computer-operated sails could produce 30% of the power needed to propel the boat.

We make it harder to propel the boat by adding weight, overfilling our water bottles, or paddling with a bungee rope attached to increase resistance.

To reduce the energy required to propel the boat, windmill ships are often equipped with low-friction hull designs, such as multihulls, or they are hydrofoils.

The sails acting as airfoils propel the boat by redirecting the wind coming in from the side towards the rear.

They would lie on a plank across the bows of the boat, and holding the plank with their hands, would propel the boat with their feet against the tunnel wall.

Perhaps this season will, despite the shows heavy mythology and universe building, rely more on its characters to propel the narrative.

The film takes place over one rather uneventful day, and subtle emotions and chemistry between the actors propel the narrative.

This mystery propels the narrative onwards.

This growing tension propels the narrative, and soon dominates the whole story.

It uses a wind turbine to capture the wind velocity and uses mechanical power to propel the vehicle against the wind.

Two water jets mounted on either side at the back of the hull propel the vehicle through water at 10 km/h.

Jet turbines or rockets would initially propel the vehicle to supersonic speed.

The lithium-ion battery can propel the vehicle up to and last on its own for up to.

The reduced nett traction may still be enough to propel the vehicle.