Recreational boats and yachts with electric drive systems are the trend. This can be attributed to society’s overall greater environmental awareness as well as stricter environmental requirements. From 12 to 14 March 2019 in Düsseldorf, boat and yacht builders can gather detailed information about what is technologically possible at “Energy Storage Europe”, the leading international trade fair for the energy storage industry.
The ban on internal combustion engines on inland waters, and the comprehensive concept of sustainability, have boosted the use of electric or combined drive systems in water sports. This trend was well documented in the form of numerous exhibits at Boot Düsseldorf 2019, the world’s largest trade fair for motor boats and water sports.
The focus lies on how the necessary electrical drive energy can be stored efficiently and safely to cover the greatest possible distances at the desired high speed without having to recharge, such as with conventional combustion engines. Energy Storage Europe, the leading international trade fair for energy storage, provides information on state-of-the-art storage technology in Düsseldorf from 12 to 14 March 2019. The Swiss battery system manufacturer ecovolta is one of the exhibitors (Hall 8b/D04). The Schwyz-based company, a division of ecocoach AG, will present the recreational motorboat “E-Commuter” from the Italian shipyard Ernesto Riva at Energy Storage Europe.
Paul Hauser, Chief Technology Officer (CTO) at ecovolta, points out some significant technical details: “The battery used has an energy capacity of 50 kWh and 400 V voltage. The resulting drive power of 90 kW enables a maximum speed of 25 knots. The boat can hold up to seven people and, at an average speed of 13 knots, is autonomous for between three and four hours. The charger has an output of 22 kW and therefore enables an 80 % charge in less than two hours.” Although this compilation refers to an individual case, it gives an impression of the enormous potential offered by the electrification of sport and recreational boats.
Special attention should be paid to the installation of future-oriented storage technology. Lithium-ion rechargeable batteries will have priority in the foreseeable future. In comparison with a conventional lead-acid battery, lithium-ion batteries have up to five times the energy density, up to 40 % greater discharge depth as well as a greater number of charging cycles (lead: 1,200, lithium: 3,000)
Not only the boat and shipbuilding industry is committed to sustainability. It is expected that the breakthrough of hybrid technology with buffer batteries will also be seen in container and cruise ships, at least in the area of inland waterways. E-boats are also more economical than conventionally driven boats, also due to the tax increase on the purchase of combustion engines in order to promote the use of environmentally friendly aggregates.
All the information regarding the use of rechargeable electricity storage will be available at “Energy Storage Europe 2019“ in Düsseldorf from 12 to 14 March 2019.