Electric Hydrofoil Board For Yacht
Electric Hydrofoil Board for Yacht Integration
An electric hydrofoil board designed for yacht tenders and recreational use combines marine-grade propulsion, autonomous stabilization, and compact stowage to extend vessel utility without compromising deck space or safety systems.
Unlike traditional water toys, this system integrates directly with yacht power management and storage protocols, enabling rapid deployment from swim platforms or garage bays while maintaining compliance with maritime safety standards for tender equipment.
Core Propulsion and Hydrofoil System
The board utilizes a sealed, water-cooled permanent magnet synchronous motor rated for continuous 5 kW output with peak capability to 8 kW for 30-second intervals, driving a dual-stage propeller through a magnetic coupling to eliminate shaft seals and reduce maintenance.
Hydrofoil wings are constructed from pre-impregnated carbon fiber with a NACA 64-series profile, generating sufficient lift at 8 km/h to elevate the board 15–25 cm above water, reducing drag by approximately 60% compared to displacement mode and extending effective range.
Active pitch and roll stabilization is achieved via inertial measurement units feeding a closed-loop controller that adjusts motor thrust and foil angle of attack at 200 Hz, maintaining platform stability within ±2° in chop up to 0.5 m significant wave height.
Power Supply and Energy Management
Energy is stored in a modular lithium-ion battery pack with nominal 48 V architecture and 2.5 kWh capacity, configured in IP68-rated enclosures with passive thermal management and cell-level monitoring to prevent thermal runaway.
Charging occurs via conductive dock interface delivering up to 3.3 kW AC input, achieving 80% state of charge in 90 minutes from 20% depth of discharge; regenerative braking during foil descent recaptures approximately 12% of kinetic energy under typical deceleration profiles.
System-level energy management prioritizes propulsion efficiency, limiting auxiliary draw to under 15 W for sensors and controls, yielding a typical range of 22–28 nautical miles at 12 km/h cruising speed under standard loading conditions (75 kg rider).
Stowage, Deployment and Yacht Integration
The board breaks down into three primary components—hull assembly, foil set, and battery module—each designed to fit within standard yacht tender lockers measuring 600 mm × 400 mm × 300 mm, with total stowed volume under 70 liters and mass under 28 kg.
Deployment requires less than 90 seconds: battery module slides into hull rail, foil wings lock via quick-release pins, and safety lanyard connects to rider wrist harness; no tools are required, and all interfaces are keyed to prevent incorrect assembly.
When not in use, the system draws zero parasitic power; an optional hardwired shunt allows yacht DC systems to monitor battery state of charge and initiate charging when connected to shore power or generator, integrating with existing energy management software via CAN bus.
Materials, Construction and Environmental Considerations
Hull shell uses closed-cell PVC foam core with unidirectional carbon fiber laminate, providing compressive strength above 0.8 MPa and impact resistance validated via 20 J drop tower testing per ISO 12215-5.
All external fasteners are grade 316 stainless steel; pivot points use marine-grade bronze bearings with PTFE liners, selected for corrosion resistance in saltwater environments and minimal galling under repetitive loading.
The system is designed for saltwater operation with routine freshwater rinse recommended after use; no sacrificial anodes are required due to isolated electrical systems and compatible material pairings, reducing maintenance intervals compared to traditional metal propulsion units.
Operational Specifications
| Parameter | Typical Value | Condition / Note |
|---|---|---|
| Maximum Speed | 25 km/h | Limited by motor power and cavitation threshold |
| Takeoff Speed | 8 km/h | Hydrofoil lift exceeds board weight |
| Operating Temperature | -10°C to 45°C | Battery performance derates below 0°C |
| Maximum Rider Weight | 100 kg | Includes gear; safety factor 1.5 on structure |
| IP Rating | IP68 (submersion) | All electronics and connections |
| Charging Voltage | 100–240 VAC, 50/60 Hz | Via onboard charger |
Specifications represent baseline configuration; actual performance varies with water salinity, temperature, rider profile, and battery state of charge. Customization options for extended range or higher thrust are available upon technical review.
