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3D & Video Resources

Maintaining a Water-jet propulsion unit

Maintaining a water-jet propulsion unit is crucial for the efficiency and longevity of marine vessels.

Here’s a general maintenance guide:

Regular Inspections:

  • Visual Checks: Look for any signs of damage, wear, or corrosion on the unit, nozzle, and surrounding components.

  • Intake Grate: Regularly inspect and clean the intake grate to prevent debris from entering and damaging the system.

  • Seals and Bearings: Check seals and bearings for leaks, wear, or damage.

  • Nozzle and Steering Mechanism: Ensure proper functionality, inspect for any signs of wear, and lubricate moving parts as needed.


  • Flushing: After each use, flush the unit with clean water to remove any salt, sand, or debris that could cause damage.

  • De-scaling: Periodically clean the unit to remove scale buildup using manufacturer-recommended descaling agents.


  • Greasing: Lubricate moving parts and bearings regularly using appropriate marine-grade lubricants.

  • Seal Maintenance: Ensure seals are in good condition and replace them if necessary to prevent water leakage.

3D diagram of a waterjet system under maintenance

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