Schottel propels research vessel
Germany’s most modern research vessel has been equipped with a Schottel propulsion system.
The survey, wreck search and research vessel Atair has on board a Schottel PumpJet, a TranverseThruster type STT 170 (200 kW) in the stern and a TranvserseThruster type STT 1 (330 kW) in the bow.
Schottel’s TransverseThrusters have elastically mounted well installation which is said to give greater comfort, reducing sound emissions by up to 11 dB. The sound-optimised STT helps to minimise underwater noise, resulting in a low-vibration design suitable for vessels of all types and sizes and especially for service operation vessels.
In addition to reduced sound generation, the well installation brings another advantage. As the propulsion unit is not welded to the vessel structure, flexible access is possible enabling easier maintenance work without the need for a dry dock stay.
The elastic well installation is available for SchottelTransverseThrusters with a power range of 125 to 6,500 kW.
To further reduce noise levels in the SILENT R-rated Atair, the dynamic behaviour of the STT 1 was analysed and adapted to minimise structure-borne noise. Vibration and pressure pulses are further reduced due to a low propeller load and the sound-optimised design of the five propeller blades. The Atair will be operated by the Bundesamt für Seeschifffahrt und Hydrographie, the German authority for maritime tasks.
