SILENT SAILING

Saildrive

systems designed for efficient integration & safe operation

01. Hydrodynamic Design for Maximum Efficiency
02. Closed-Loop Cooling. Minimise Maintenance
03. Energy Recuperation for Extended Range
Design your own system

SD-RACING

Racing Saildrive
  • ⁠Power: 7 to 37 kW
  • ⁠RPM: 500-1800 rpm
  • ⁠Voltage: 48-100 VDC
  • Plug-and- play solution
  • ⁠Built in with EPT Racing Saildrive
  • ⁠CE and EN 60034 type approval
  • ⁠Adaptable flanges available on request
  • Glycol cooling in Saildrive leg itself
  • Cooling plate, control box is mounted
  • No requirement of seawater intake into the boat
  • No need of seawater filter and pump
  • Capable of energy regeneration

TURNABLE

turnable saildrive
  • ⁠Power: 7 to 37 kW
  • ⁠RPM: 500-1800 rpm
  • ⁠Voltage: 48-100 VDC
  • ⁠Available with 180° or 360° rotation
  • High torque 360 degree complete turnable in 5 sec
  • ⁠ EPT SD Racing leg mounted
  • ⁠CE and EN 60034 type approval
  • ⁠Adaptable flanges available on request
  • ⁠Heat exchanger, pumps, filter, controller and PLC mounted

SHAFT DRIVE

  • ⁠Power: 7 to 38 kW
  • ⁠RPM: 500-1800 rpm
  • Voltage 48 – 100 VDC
  • ⁠⁠CE and EN 60034 type approval
  • Glycol pump, sea water pump, heat exchanger and propulsion
    and regeneration controller integrated
  • ⁠Plug and play system
  • Capable of energy regeneration

SD Racing SailDrive

Efficient, compact and powerful
  • Optimized Performance: Designed to enhance your sailing experience with a perfect blend of performance, efficiency, and reliability
  • Closed-Loop Cooling System: Innovative oil and glycol heat exchangers eliminate the need for seawater intake
  • Enhanced Safety: No seawater onboard means reduced risk of corrosion and leaks
  • Simplified Installation: Compact and streamlined design makes setup straightforward
  • High System Reliability: Closed cooling system improves long-term durability and reduces maintenance needs
  • Hydrodynamic Design: Minimizes drag and maximizes thrust for smooth, quiet operation
  • Instant Torque & Zero Emissions: Delivers immediate power with an environmentally friendly footprint
  • Low Maintenance: Electric system ensures less wear and fewer service requirements
  • Ideal for Tight Maneuvering: Perfect for docking and navigating marinas

Multibox System

a compact, marine-compatible solution with flexible configurations for propulsion, energy, control, generation, monitoring, and auxiliary systems.
  • Input options: 2 propulsion units (2 x sail drive or 2 x shaft drive) OR:
    1 propulsion unit (sail drive or shaft drive) + 1 generator
  • Battery system: 3 x 18.2 kWh battery units (100 VDC each, total capacity 55 kWh)
  • Chargers: 3 x 3.3 kW charger
  • Converter: 1 x DC/DC Converterconverter: 100 VDC to 14 VDC or 24 VDC
  • Inverter: 1 DC/AC inverter: 100 VDC to 230 VAC
  • Power outputs: Electric motor: individual maximum output 40 kW
    Generator: mMaximum Output 20 kW
  • Connection options: 2 throttle units, 2 display units, Switches, emergency stops and push buttons
  • Functionality: Suitable for sailing boats and catamarans. Up to two Multibox units can be installed for larger applications. This configuration supports up to two propulsion systems and generators, doubling the battery size (total capacity 110 kWh).

Connection Possibilities

Plug and Play
  • Input possibilities: 1 propulsion unit (1 x saildrive or 1 x shaftdrive)
  • Battery system: 18.2 kWh or 36.7 kWh battery units with 100 VDC
  • Chargers: 1 × 3.3 KW charger unit
  • Converter: 1 x DC/DC converter: 100 VDC to 14 VDC or 24 VDC
  • Inverter: Cannot be connected
  • Power Outputs:Electric motor: maximum individual output 30 kW. Generator: cannot be connected
  • Connection Options: 1 x throttle units, 1 x display units, Switches, emergency stops and push buttons
  • Functionality: Suitable for sailboats only. Quick and easy installation. The complete package and the drive system are manufactured in-house

SD Racing SailDrive Walkthrough

Efficient, compact and powerful
  • Innovative Design: a cutting-edge permanent magnet motor integrated into a redesigned sail drive system.
  • Compact and Efficient: Significantly slimmer and more efficient than traditional Yanmar legs, reducing bulk without compromising power.
  • Optimized Water Flow: Extensively tested through CNC routes and computer simulations for superior hydrodynamics and performance.
  • Advanced Propeller Efficiency: Equipped with a folding propeller that is 40% more efficient than feathering propellers, thanks to its airfoil shape and lift generation capabilities.
  • Customizable Leg System: Fully adjustable and adaptable to any leg system, with modifications done in-house at EP Technology.
  • Versatile Handling: Ideal for both cruising and maneuvering in tight marina spaces
  • Modern Technology: Represents the latest innovations in propulsion systems for sailboats.
  • Reduced Oil Resistance: Minimizes resistance in the lower leg for improved movement and lower environmental impact

Turnable SailDrive

Electric Turnable Saildrive offers a 360° rotation capability and a powerful electric motor.
  • High-Efficiency Batteries: Equipped with cutting-edge lithium batteries for optimized performance
  • Energy Optimization: Features a Turnable mechanism that maximizes energy efficiency during sailing and recharging
  • No Additional Thruster Needed: Simplifies design by eliminating the need for a thruster behind the boat
  • Impressive Performance: Maintains speeds between 16 to 20 knots with Saildrive technology
  • Customizable Design: Adaptable to the boat’s type, weight, length, and specific requirements

Turnable SailDrive – Walkthrough

A look at its key features:
  • Advanced Motor Design: The sail drive incorporates a permanent magnet motor, offering enhanced performance and reliability.
  • Slim and Efficient Build: Compared to the older, bulkier Yanmar leg systems, the EPT Sail Drive has a significantly slimmer design. The reduced size and optimized hydrodynamic shape improve water flow and overall efficiency.
  • Folding Propeller Advantage: Equipped with a folding propeller, it provides up to 40% more efficiency than feathering propellers. Unlike feathering designs, the folding prop retains an airfoil shape, generating lift and enhancing forward propulsion.
  • Versatile Adjustability: The sail drive is compatible with various leg systems, with in-house adaptability to meet specific requirements.
  • Wide Application Range: Suitable for boats ranging from 30 ft to 60 ft, the system supports a diverse range of marine applications.
Sail Drive Brochure

Additional equipment for more functions.

BoatControl App


A compact marine solution that combines propulsion, energy, control, power generation, monitoring and auxiliary systems.
  • Channels: Option to connect 14 channels in parallel
  • Access: Global access and monitoring
  • Control: Intelligent automation and effortless control
  • Compatible: Compatible with Android, iOS and web
  • Insight: Insight into boat performance via real-time data
  • Multi: Multi-device control for additional boxes
BoatControl App

DuCan

This service is exclusive to B2B customers, with private access available upon request. Works with Windows, Android and iOS to improve operations, protect assets and support customer relationships.
  • Maximise uptime: Access complete vessel system data to reduce downtime and optimise performance
  • Automated data logging and trend analysis: Capture, log and analyse critical data to identify patterns and anticipate maintenance needs
  • Real-time error reporting and alarms: Receive instant alerts and notifications in the event of faults or malfunctions, enabling quick remote management of issues
  • Comprehensive vessel overview: Get a complete, actionable overview of each vessel’s operational status, so you can proactively address potential issues
  • Insight: Insight into boat performance via real-time data
  • Multi: Multi-device control for additional boxes

DC Mini Generator

A compact marine solution for propulsion, energy, control, power generation, monitoring and auxiliary systems.
  • Power: 12- 17 kW
  • Voltage: 48 – 800 VDC
  • Ultra compact
  • Weigt: under 110 kg
  • Sound enclosure: With or without
  • Fast fix fire extinguish hole
  • Customisable air intake and exhaust openings
Generator

Normal Diesel v/s EPT Electric system

The 60 HP diesel engine is comparable to the 39 KW EPT electric system.
  • Efficient Battery System: Utilizes a 37 kWh battery pack for optimal energy storage and performance
  • Compact Installation: Battery box can be conveniently placed in the engine room, streamlining the setup
  • Simplified Integration: The battery module houses most electric components, requiring minimal connections for installation
  • Enhanced Sailing Experience: Delivers reliable electric power and ample battery capacity for smooth and enjoyable sailing

EPT Plug & Play Batteries

The EPT batteries are complete units.
  • Integrated Components: Includes electronic boards, controllers, and power connections within a compact battery box
  • Standalone Operation: Functions as a single unit, requiring only a charger and control modules for full operation
  • Airtight Design: Engineered to be completely sealed for durability and safety.
  • Space-Saving Solution: Occupies minimal space, ensuring easy installation in tight areas
Battery Overview

Wiring Example

Focus on Energy Independence
  • Electricity Generation While Sailing: EPTechnologies’ Turnable Saildrive generates power for the batteries as you sail
  • Optimized Hydrodynamics: The turnable design ensures the propeller is always positioned for optimal hydrodynamic efficiency
  • We will always stand for being green, silent and powerful

Plug and play systems

Powerboats

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