What is the rank represented by the insignia with a single horizontal stripe?

The insignia featuring a single horizontal stripe represents the rank of Petty Officer Third Class. This rank is a fundamental level within the Petty Officer structure, which is a non-commissioned officer (NCO) position in the Navy. The horizontal stripe signifies the first level of advancement from an enlisted sailor to a supervisory role, indicating that the individual has gained essential skills, knowledge, and leadership capability in their specific rating.

In contrast, the ranks of Seaman and Seaman Apprentice do not possess any stripes in their insignia, as they are entry-level positions in the Navy. Chief Petty Officer, on the other hand, is a senior NCO rank represented by a more complex insignia that includes a combination of stripes and anchors, distinctly differentiating it from the first-class ranks like Petty Officer Third Class. Understanding these rank insignias is crucial for recognizing the chain of command and the responsibilities associated with each level within the Navy.