For fleet managers and superintendents, a reliable bow thruster is essential for safe and efficient port manoeuvring. When it fails, the consequences are immediate: delays, higher costs, and operational risk.
During a routine Condition Based Monitoring (CBM) analysis, we detected very high vibration levels (76 mm/s) on a bow thruster motor — far above ISO limits.
FFT vibration analysis revealed unusual frequency peaks. After correlating the gearbox ratio and propeller configuration, the data suggested a damaged or missing propeller blade.
A diver inspection confirmed it.
The key challenge for the vessel owner was clear:
Can the bow thruster safely operate until the next dry dock?
Additional measurements allowed us to determine a safe operating limit of 50% load, introduce shorter monitoring intervals, and confirm the gearbox remained in good condition.
Result: The vessel could continue safe operations until scheduled repairs — without unexpected downtime.
That’s the power of data-driven maintenance in shipping.
How are you monitoring critical equipment like bow thrusters across your fleet?
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