Bow or Stern

BOW or stern

Explore Our Product Range

Jet Thruster JT30 Single installation Bow or stern in yacht bow, showcasing pump unit, flexible hose, diverter valve, and nozzle; ideal for water skiing boats, sail yachts up to 32ft, and RIBs up to 25ft.

30 Kgf Bow or Stern

- Water Skiing & Wake boarding boats

- Sailyachts up to 32Ft

- Rigid Inflatable Boats up to 25ft

- Stern Thruster small motor yachts

- Center Console Boats

- Shallow Draft Aluminium boats 

View Product
Jet Thruster JT50 Single installation Bow or stern in yacht bow with visible pump unit, flexible hose, diverter valve, and nozzle; designed for motor yachts up to 33ft and sail yachts up to 40ft.

50 Kgf Bow or Stern

- Motor Yachts up to 33ft

- Sail yachts up to 40ft

- Rigid Inflatable Boats up to 35ft

- Stern Thruster Motor Yachts up to 40ft

- Center Console boats up to 35ft

- Shallow Draft custom boats up to 40ft

View Product
Jet Thruster JT70 Single installed in Bow or Stern yacht bow, showing pump unit, flexible hose, diverter valve, and nozzle; suitable for motor yachts up to 40ft and sail yachts up to 50ft.

70 Kgf Bow or Stern

- Motor Yachts up to 40ft

- Sail yachts up to 50ft

- Rigid Inflatable Boats up to 40ft

- Stern Thruster Motor Yachts up to 45ft

- Center Console boats up to 45ft

- Shallow Draft custom boats up to 45ft

View Product
Jet Thruster JT90 Single installation Bow or stern in yacht bow, featuring pump unit, flexible hose, diverter valve, and nozzle; optimal for motor yachts up to 50ft and sail yachts up to 60ft

90 Kgf Bow or Stern

- Motor Yachts up to 50ft

- Sail yachts up to 55-60ft

- Rigid Inflatable Boats up to 45ft

- Stern Thruster Motor Yachts up to 50ft

- Center Console boats up to 50ft

- Shallow Draft custom boats up to 50ft

View Product

Possible for JT30-JT90

Configuration examples

Artist impression of two Jet Thruster Single systems installed to the bow AND stern of a yacht. Pump units, flexible hoses, diverter valves and nozzle sections clearly visible

Dual Single Setup

Perfect setup for maximum maneuverability

Knop
Artist impression of two Jet Thruster Single systems installed to the bow of a yacht. Pump units, flexible hoses, diverter valves and nozzle sections clearly visible

Dual Bow Setup

Double power for larger vessels up to 180 kgf

Knop
Artist impression of two Jet Thruster JT90 Single systems installed to the bow of a yacht. Pump units, flexible hoses, diverter valves and nozzle sections clearly visible.

Dual pump setup to 1 Valve

140 Kgf setup for larger motor / sail yachts

Knop
Artist impression of two Jet Thruster JT90 Single systems installed to the stern of a yacht. Pump units, flexible hoses, diverter valves and nozzle sections clearly visible.

Dual Stern Setup

Double power for larger vessels up to 180 kgf

Knop

Calculate required thrust

"Calculate thrust with help of the formula


In few steps you can see which Jet Thruster you need"

arrow pointing down

Calculate:

It's quite easy to calculate which Jet Thruster you need: Simply by measuring the boat length and boat height, our formula can give you an accurate estimate of the required thrust. With 4 Thrust forces available, and many optional configurations, our systems are suitable for pleasure yachts in the 25-60 ft. range. Because the Nozzles go maximum forward in the bow, the Jet Thruster is very efficient. 

A simple physical law applies: Increase the arm and less force is required. By placing the Nozzles more forward you can move a large boat relatively easy!

Easy Thrust Calculator

Do you own a Catamaran?  

Obviously there is more wind-catch. A Dual Jet Thruster system will generate the required thrust.

Two pump units will work together as a team and you will double the power. 

Because the pump unit can be placed amid-ships there are endless technical possibilities to add maneuverability to your catamaran or any other yacht!



Contact our specialists for more information

Contact Us

  • The Formula:

    For an accurate Thruster Calculation you have write to following formula:


    A: Boat Lengt x B: Boat height x C: 0,5 x D: 0,75 x E: Windpressure = Required Thrust

  • A: Boat lengh

    From Bow to Stern, write down the lenght above the water line. In this formula we take wind pressure into account. Current is excluded

  • B: Height

    Measure the height of the yacht above the waterline. Be aware the superstructure will catch wind, same as rigging. We exclude the mast itself for a Sailyacht, as otherwise the calculation would have too much variables

  • C: Multiply with 0,5 (50%)

    Often Sailyachts have a keel or Mast on with the yacht will pivot. In this case, 50% of the lateral surface of the yacht will turn into the wind, and on the other side of the pivoting point the yacht will turn away from the wind. In the calcualtion we take advantge of this phenomena. Is there no pivoting point? Or do you have a yacht with the weight in the back, you can exclude this part of the formula. The result is a larger wind catch surface in the outcome

  • D: Multiply with 0,75 (75%)

    You have just measured 2 basic dimentions: Lenght and height. Obviously the height is not everywhere the same at your yacht. If you enter the maximum height in the formula, most likely the total lateral surface would be too large. We therfore reduce the average are with -25% for those "open" areas the wind has no effect on.

  • E: Wind pressure

    In this formula we take the average windpressure from the Beaufort-Scale levels 5 and 6 into account. At these wind-pressures the wind will blow between 17 and 27 knots. Enough to make it difficult to dock your yacht. 


    Beaufort 5: 17-21 knots: Fresh Breeze

    Beaufort 6: 22-27 knots: Strong Breeze


    The average wind pressure:


    Beaufort 5: 4.5Kg/m2

    Beaufort 6: 7.5Kg/m2


    As you see there is quite a difference in windpressure at these given levels. 


    You can check out the wind-pressure by adding 4.5 or 7.5kg in the calculation in order to determine which Thrust force is required for your yacht

  • Result

    The outcome of your calcualtion will give you a estimation of the thrust force you need. 


    Below we show you the 4 thrust forces we have available. In the past 10 years many yachts have been equipped with a Jet Thruser. We therefore can offer a large amount of references towards different production yachts with a Jet Thruster. Check out the Dufour and Jeanneau pages at this website to learn more.

Share by: