Foiling system:
The innovation formula

Candela’s hydrofoil craft use underwater wings (foils), to lift the hull above the water, reducing drag and increasing efficiency. Fully submerged foils provide stability, while active sensors continuously adjust the vessel’s position for smooth, efficient performance, even in rough conditions.

Candela Tech Talks | Episode 1, C-Foil System

Candela C-Foil System
Maximizing efficiency and precision

Candela has enhanced century-old hydrofoil technology with advanced software and sensors, utilizing fully submerged foils that reduce drag compared to older models. At a speed of 16 knots, our custom foil profile lifts a fully loaded hull above water, minimizing wave-making resistance and friction.

Built from ultra-strong multiaxial carbon fiber, the hydrofoils are designed to withstand debris impacts. Similar to a commercial airplane, the craft features a large main foil near the center of gravity and one or two smaller T-foils at the aft. The foils retract with a button for easy towing, storage, and operation in shallow water.

T Shaped Hydrofoils, Candela Foiling system

Lightweight Innovation
Advanced hulls transforming performance.

Lightweight 100% Carbon Fiber Hull

100% carbon fiber

Batteries are heavy, necessitating an extremely light yet rigid and strong hull. Our solution was to construct the hull entirely from carbon fiber, allowing Candela hydrofoils to weigh significantly less than comparable boats of the same size.

Candela Factory (Foiling system)

Redefining boating

With this advanced hull design, we are redefining what is possible in electric boating, combining cutting-edge technology with sustainable materials and innovative eco-friendly practices to create a truly exceptional maritime experience.

Candela Avionics
Advanced stabilization

Candela’s craft use advanced foil stabilization technology, deployed in over 100 vessels since 2016, to provide a smoother ride compared to traditional boats. The flight control system integrates data from over 10 sensors and continuously adjusts the foils’ angle to ensure stable and efficient flight above the water.

Enhanced through over-the-air updates, the system optimizes performance as vessels log more mileage worldwide. This technology ensures a quiet, seamless ride without slamming, noise, or motion sickness, while also reducing emissions, wakes, and operating costs compared to fossil-fueled boats.

Candela Tech Talks | Episode 2, The Flight Controller

Questions?
Here are the top three.

How does hydrofoiling work?

According to Bernoulli’s Principle, lift on a hydrofoil is generated by a pressure difference. As the boat moves, water flows faster over the curved top of the foil and slower underneath. The faster-moving water creates lower pressure on top, while the slower water beneath creates higher pressure. This pressure difference results in an upward force, lifting the boat’s hull out of the water and reducing drag.

Candela’s innovative electric boats and ferries harness this technology, with an advanced foiling system, allowing them to glide smoothly above the water with less energy consumption, delivering a quieter, more efficient, and environmentally friendly boating experience.

Why do you need active stabilization?

A vessel with fully submerged foils is inherently unstable, much like a drone, and needs to be constantly balanced. It’s similar to balancing a pen on the palm of your hand. Just as the hand must constantly adjust to keep the pen upright, the foils need to adjust to keep a Candela flying.

Candela’s Flight controller—the computer that helps the captain fly the boat—achieves stability by continuously adjusting the angle and position of the hydrofoils in real-time, much faster than a human could operate. This system uses sensors to monitor the boat’s position, speed, and water conditions, ensuring the vessel remains level and balanced even in turbulent waters, delivering a smooth, efficient, and safe ride.

For the captain, this makes a Candela vastly easier to drive than a conventional boat, as there’s no need for trim tabs or engine tilting—everything is handled by the computer. For passengers, it means a smoother, more enjoyable ride.

How does Candela’s foiling system differ from older hydrofoil vessels?

Candela’s foiling system represents a significant leap forward from traditional designs. Older hydrofoils typically relied on fixed foils and a ladder system of wings to maintain height and roll stability, which made them less efficient. This design resulted in more surface contact with the water, leading to higher drag, making them unsuitable for electrification.

These older hydrofoils also lacked an active control system, meaning they were more affected by waves and winds, sometimes resulting in a less comfortable ride.

However, Candela’s boats are equipped with an advanced flight control system. It actively adjusts the foils in real-time based on speed, water conditions, and the boat’s position. This results in a smoother ride, better stability, and improved energy efficiency. Unlike older hydrofoils that may struggle in rough waters, Candela’s foils perform optimally in a variety of conditions, significantly reducing drag and allowing for longer range and lower energy consumption.

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