White Rabbit Equipped with Schottel Manoeuvring Systems
The 84m long and 19.1m wide superyacht White Rabbit built by Australian yard Echo Yachts and designed by Sam Sorgiovanni is equipped with azimuth thrusters from the German propulsion expert Schottel. To ensure maximum manoeuvrability, the superyacht is provided with two Pump Jets and one Rim Thruster.
Low-noise and low-vibration azimuth thrusters offer high comfort on the largest yacht ever built in Australia. The manoeuvring system of the tri-hulled yacht consists of one electric Schottel Rim Thruster type SRT 800 elastically fitted in the bow and delivering an input power of 200kW. Additionally, two electrically driven Schottel Pump Jets type SPJ 57 RD with an input power of 200kW are elastically mounted in the stern. In combination, the space-saving thrusters provide optimal manoeuvrability on command.
“Reduced noise and vibration, high efficiency as well as savings in space and weight are important requirements for yachts. With the Rim Thruster and Pump Jet our portfolio suits these demands”, explains Andreas Witschel, Sales Director Cruise, Ferry & Yachts at Schottel. “The Pump Jets are completely enclosed by the vessel’s hull and create no additional drag or resistance. It is ideal for vessels frequently operating in DP mode or cruise vessels and yachts with high demands on comfort.”
One of the company’s latest developments is the Rim Thruster, an electric propulsion system without a gearbox or a drive shaft. The stator of the electric motor is installed in the outer part of the tunnel, while the propeller blades are attached to the inside of the rotor. This results in a space-saving and low-weight thruster. The high-performance Rim Thruster converts electrical energy directly into propulsion without transmission losses. The bearings of the rotor are friction bearings, so running in sea water, meaning that no gear oil enters the product – the Rim Thruster is therefore enormously environment-friendly.
The Pump Jet provides full thrust in all directions and can be used as a reliable manoeuvring system, take-home device and main propulsion unit on a wide range of watercraft. The installation is completely flush with the ship’s hull: the azimuth thruster is fully protected in shallow-water operation, even in case of grounding. Furthermore, a protective grid at the intake prevents damage by floating debris. A low volume flow on the intake side and also low intake velocity result in a reduced noise level and high efficiency.