Torqeedo Deep Blue 50R: The Leading Inboard Electric System for Sailboats Reviewed
The Deep Blue 50R delivers 50 kW peak power with a tightly integrated BMS, charger, and display ecosystem — making it the most complete turn-key inboard package currently available for sailboats up to 20 tonnes.
Torqeedo's Deep Blue platform has been the benchmark for serious sailboat repowers since its introduction, and the 50R revision refines rather than reinvents it. The liquid-cooled permanent-magnet synchronous motor produces 50 kW peak and 30 kW continuous on a 48 V DC bus, with peak current reaching 1,040 A for short bursts — figures that require careful attention to main cable cross-section and fusing.
The system's standout benefit is its vertical integration. The motor, TorqLink motor controller, 40 kWh battery pack, 6 kW on-board charger, and colour helm display all communicate over a single proprietary CAN bus. In practice, this eliminates the compatibility headaches common to component-sourced installations: the BMS, charger, and motor controller share state-of-charge data in real time, so the helm's range estimate accounts for actual battery temperature and cell balance rather than voltage alone.
For a 12-tonne sailboat targeting 5.5 knots cruise speed, the 40 kWh pack delivers approximately 35–40 nm of range under moderate conditions — enough for most coastal day passages. Charging the pack from 20% to 80% on 32 A shore power takes around 5 hours, or 2 hours with the optional 22 kW fast-charger upgrade.
The main limitation is price: a complete Deep Blue 50R installation with the 40 kWh pack typically lands between €35,000 and €45,000 installed in Europe, excluding battery-box structural work. That premium buys genuine peace of mind for bluewater owners, but many coastal sailors will find the 25R (25 kW peak, 20 kWh pack) a more cost-effective starting point.