You are here:


The hydrospoiler can be combined with the Van der Velden Marine Systems HD profile rudders. It radically boosts propulsion efficiency by improving the wake of the propeller.
In addition, a hydrospoiler reduces vibrations in the vessel's stern section and improves its course-keeping capabilities.


  • Speed gain across the whole range (approx. 5% to 8%)
  • Stern section is steadier due to improved flow-off between the rudders
  • Ship recovers faster from major manoeuvring motions
  • Improves the poor manoeuvrability on one side caused by the direction of rotation of the propeller in a twin rudder system