Which of the following is NOT displayed on the Engine Monitoring Display?

The Engine Monitoring Display typically focuses on critical information related to the performance and function of the engine, which includes parameters such as engine RPM, oil pressure, and fuel percentage. These metrics are essential for understanding how the engine operates and for maintaining optimal performance.

Navigation speed, on the other hand, is primarily related to the vessel's movement through the water, rather than the functioning of the engine itself. It is typically displayed on a separate navigation display or instrument, as it pertains more to the vessel's speed over ground or water rather than the engine's operational status. Therefore, this is the correct answer because navigation speed does not fall under the category of engine monitoring metrics.