What distinguishes the collar device of a Chief Warrant 2?

The distinguishing feature of a Chief Warrant Officer 2 (CWO2) in the Navy is represented by the specific collar device they wear. This device consists of one gold bar accompanied by two blue breaks. In naval tradition, the gold bar symbolizes the officer's rank and experience, while the blue breaks indicate their progression within the Chief Warrant Officer designation.

The collar devices for other ranks differ in color and number of breaks, thus making it easy to identify the rank at a glance. This system of devices allows for a clear hierarchy and recognition of rank among personnel, crucial for maintaining order and reporting structures in naval operations.