What action should the EOW take when encountering an abnormal vibration in the machinery?

When encountering abnormal vibrations in the machinery, the appropriate action for the Engineer Officer of the Watch (EOW) is to investigate the cause immediately. Abnormal vibrations can indicate underlying issues such as misalignment, imbalance, mechanical wear, or even impending failure of critical components. Addressing these symptoms promptly is critical for ensuring the safety and reliability of the equipment, as well as preventing potential damage that could lead to costly repairs or safety hazards.

Investigating the vibration allows the EOW to assess the situation thoroughly, potentially utilizing monitoring tools and diagnostic methods to identify the source of the vibrations. This proactive approach helps maintain optimal operational performance and reduces the risk of equipment failure, which could have significant repercussions while the vessel is in operation. Ignoring the symptom or deferring the investigation can lead to escalation of the problem, which could compromise both safety and functionality on board. Reporting only if the situation worsens would also be insufficient, as timely intervention could mitigate more severe outcomes.