A silver star replaces the specialty mark for what type of Master Chief Petty Officer?

The correct answer is Command. In the Navy, the Master Chief Petty Officer rank has different designations that can reflect a member's specialty or command role. A silver star is uniquely used to replace the specialty mark for a Master Chief Petty Officer who serves in a command position. This emphasizes the leadership role they hold, distinguishing them from their peers in other specialties or fleet assignments.

While other types of Master Chief Petty Officers, such as those in the submarine or fleet specialties, have their own designated marks, the silver star specifically signifies command. This identification of command status serves not only to recognize the individual's leadership capabilities but also to establish their precedence within the structure of the Navy, showcasing their unique experience and responsibilities in leading personnel and operations within a command setting.