Preventive and corrective maintenance of waterjets in marine services is crucial for ensuring the proper functioning and longevity of waterjet propulsion systems. Waterjets are commonly used in high-performance vessels, including ferries, patrol boats, and luxury yachts, due to their efficiency, speed, and maneuverability.

1. Preventive Maintenance for Waterjets

Preventive maintenance (PM) aims to reduce the likelihood of equipment failure and optimize performance by performing scheduled checks and routine tasks to ensure everything is functioning as intended.

• Regular Inspection of Waterjet Components
• Lubrication
• Waterjet Impeller and Blade Condition
• Seal and Bearing Checks
• Cooling System Maintenance
• Steering and Reversing Mechanism Maintenance
• Anode and Corrosion Protection
• Performance Checks
• General Cleaning

2. Corrective Maintenance for Waterjets

Corrective maintenance (CM) is performed after a fault or failure has occurred. It involves repairing or replacing faulty components and restoring the waterjet system to normal operating condition. Corrective maintenance can be more expensive and time-consuming than preventive maintenance, so it’s best to avoid it by staying on top of routine tasks.

• Impeller Damage or Wear
• Seal and Bearing Failure
• Cooling System Malfunctions
• Cavitation or Loss of Efficiency
• Hydraulic System Failures (Steering and Reversing)
• Structural Failures or Corrosion
• Steering and Reversing Mechanism Failures
• Electrical or Sensor Failures