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   [Electric Propulsion Systems](/articles/electric-propulsion-systems)# Test of the Candela C-7 Electric Foiling Boat

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  var videoData = {"video_carousel_display":"inline","video_carousel":{"dealer_info":false,"items":[{"title":"Candela: The Future of Hydrofoil","image":{"src":"\/sites\/default\/files\/media-icons\/generic\/video.png","alt":""},"url":"https:\/\/player.vimeo.com\/video\/729369411"}]}}; Because air is 784 times less dense than water, the fluid through which a boat’s hull must travel requires a tremendous amount of energy. Therefore, conventional boats with the equivalent of a Tesla’s batteries aboard have a range that is a fraction of the automobile’s. For that reason, Candela has engineered a foiling powerboat. By lifting the hull out of the water on foils, thus greatly reducing drag, Candela is able to significantly extend the boat’s range on a given battery charge. This video explains the history of foiling powerboats and tests the energy consumption of the Candela C-7 at several operating speeds.

- [Candela Website](https://candela.com/)