In which navigation mode is the steering of the vessel most automated?

The mode in which the steering of the vessel is most automated is the Auto mode. In this mode, the vessel's autopilot systems take control of steering responsibilities, allowing for a high level of automation. This means that the crew can set a course or specific parameters for the vessel's movements, and the autopilot can continuously make adjustments to maintain that course with minimal manual input.

Auto mode utilizes technology designed to enhance accuracy and reduce the workload on the watchstander, leading to improved efficiency and safety during navigation. The system automatically compensates for drift, wind, and other factors, ensuring that the vessel remains on the intended path.

In comparison, the other modes like Manual, Assisted, and Electronic would involve varying degrees of human intervention or only partial automation, making Auto mode the superior choice for complete automation of steering functions.