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Tuesday, June 23, 2020 

Schottel has launched a newly developed retractable variant of its proven SRT rim thruster, covering the power range up to 500 kW.

The new SRT-R offers low noise emissions and tailor-made solutions for a range of applications. Optimised by CFD (Computational Fluid Dynamics), the internal propeller blades are hydrodynamically designed to be highly resistant to cavitation.

The SRT-R is able to cover a thrust radius of 360 degrees. This not only makes it versatile, but also allows it to be optimally adapted to the required operating profile, including DP operation or as a take-home device. In retracted position, no additional flow resistance is generated.

Like the SRT, the SRT-R features low- noise and vibration. This makes the thruster particularly suitable for all vessels regularly carrying passengers, with high demands on comfort.

The retractable rim thruster is also available as an RT variant. This means that in retracted position it functions as a transverse thruster, making it highly effective in shallow water. Characterised by improved manoeuvrability, its range of application extends from brief docking and casting-off in ports to continuous operation with dynamic positioning. It offers a short response time to steering commands that make precise positioning easier at all times.

The rim thruster employs an electric propulsion system. The electric motor stator 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 unit. It converts electric power directly into propulsion power. Surrounding water permanently cools the electric motor, preventing it from overheating.

The robust design contributes to reduced maintenance. It is suitable for either new builds or retrofits due to its compact design and simple installation.

Offering the option of using biodegradable oils, vessels with the SRT-R are compliant with the current VGP regulations of the US Environmental Protection Agency.

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