Propeller Shaft · Shaft Line & Propulsion
The Kongsberg Jet Control System – Extended is an integrated hydraulic control and monitoring solution for controllable‑pitch propeller (CPP) shafts, providing precise thrust regulation and rapid pitch changes.
| Hydraulic oil and filter change | per manufacturer schedule, condition-based on oil analysis and filter differential pressure |
|---|---|
| Feedback sensor calibration check | annually or per class PMS |
| Backup/emergency control function test | per class requirement, typically at each survey |
Function and alarm testing of the propulsion control system, including backup/local control, is typically required at periodic survey rather than a fixed teardown.
Estimated lifetime: As a control/hydraulic system rather than a mechanical wear component, service life is generally driven by component obsolescence and hydraulic contamination control rather than running hours - electronic components are commonly reviewed on a 10-15 year horizon.
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