Which rank is represented by three diagonal bars in the Navy?

The rank represented by three diagonal bars in the Navy is indeed Seaman. In the Navy's enlisted rank insignia, the visual representation is crucial for quickly identifying a sailor's rank. The Seaman rank is denoted specifically by three diagonal stripes, which can often be confused with other ranks that have similar features but differ in the number of stripes or other insignia elements.

In the Navy, Seaman is a foundational rank that signifies a sailor who has completed their initial training and is generally engaged in assigned duties. It is an important step in a sailor's career progression, laying the groundwork for further advancement in the Navy's rank structure.

The other ranks mentioned, such as Seaman Apprentice, Petty Officer Third Class, and Petty Officer First Class, each have their own distinct insignia that differs from the three diagonal bars of Seaman, thereby clarifying the rank's visual identity within the Navy's hierarchy.