Which officer rank is represented by one 2-inch stripe and four 1/2-inch stripes above it on their sleeve?

The rank represented by one 2-inch stripe and four 1/2-inch stripes above it on a sleeve is the Captain rank. In the U.S. Navy’s system of insignia, Captain is a rank that typically corresponds to a significant level of responsibility, often involving command of a ship or a large unit.

The combination of insignia — one wide stripe representing the Captain's level of authority and several narrower stripes beneath — is a distinct marker of rank within the officer classification, helping to easily identify the officer’s position. Understanding this insignia is crucial for recognizing the hierarchy and structure within naval operations.