Tunnel Thruster - Type SuperSilent

The Super Silent (SS) tunnel thruster has a modified hydraulic power pack for low noise. It has double walls through the full tunnel length and a flexibly mounted inner tunnel. This concept provides noise reduction up to 10 dB compared to standard designs.

A reduction up to 25 dB can be reached in combination with floating floors and other measures by the shipbuilder.

Tunnel thruster super silent main page


  • Reduced tip speed
  • Skew blades
  • Heavy duty propeller with double lip seal
  • Shaft seal pressure control with drain connection in DP thruster
  • Mechanical locked bearings in DP thrusters
  • Available in CP and FP type

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