Who holds the position of department head in a submarine?

The position of department head in a submarine is typically held by the Sub Navigator/Operations Officer, primarily due to the wide range of responsibilities associated with that role. This officer oversees the navigation, operations, and general tactical employment of the submarine, which is critical for the overall success of missions and the safety of the crew.

In addition to navigation duties, the Sub Navigator/Operations Officer is responsible for coordinating various operational aspects, including mission planning and execution, which requires a high level of expertise and leadership. This role is vital in ensuring that the submarine operates effectively and efficiently within its mission parameters.

The other roles mentioned, such as the Sub Communication Officer, Sub Assistant Operations Officer, and Sub Combat Systems Officer, are important for their specific domains but do not carry the same breadth of responsibility or authority as the department head role. Each of these positions support the mission and operations of the submarine but operate under the direction and leadership of the department head, making the Sub Navigator/Operations Officer the key leadership position among them.