Why Kalkman?
  • Experience since 1924
  • Reliable partner
  • Personal contact
  • Tailor-made solutions
  • High quality


In order to use the bow thruster for emergency propulsion, Kalkman has developed a special type of bow thruster which can also be used for sailing. It involves a tube bow thruster and a control grid bow thruster.

The vertically assembled thruster rotates in a tube and pushes the water outside again over a 360°-revolving control grid. Works as rudder when travelling backwards.

  • Suitable for use in shallow water
  • Can be used as emergency propulsion
  • Also functions while ship is at full speed.
  • Capacities up to ca. 750 kW
  • Vertically rotating propeller
  • Outflow of water over a 360°-revolving control grid
  • Many possibilities for water suction via a tube