What steps are involved in preparing the engine room for arrival in port?

The correct answer focuses on the comprehensive actions required to prepare the engine room for arrival in port, which includes securing machinery and preparing for inspections. This process is critical for ensuring the safety and efficiency of vessel operations, as well as compliance with regulatory requirements.

Securing machinery involves shutting down or adjusting operations of specific systems that will not be needed while in port, to prevent any unnecessary wear or potential hazards. This step is essential for the safety of the crew and the ship's equipment, as it minimizes the risk of incidents during the transition to port operations.

Additionally, preparing for inspections is crucial because it ensures that everything meets the necessary standards and regulations. For example, various checks and housekeeping measures might be required to demonstrate compliance with safety and environmental protocols. Having the engine room tidy and all systems functioning correctly helps facilitate a smooth inspection by port authorities upon arrival.

In contrast, simply cleaning equipment does not encompass the critical safety and operational readiness steps required prior to docking. Conducting only system checks might overlook the need for a broader scope of preparation, and changing filters alone does not account for the full gamut of necessary actions that need to be taken to secure the engine room and ensure it is ready for port.