Which rank is not a type of Petty Officer?

The rank of Seamen Apprentice is not considered a type of Petty Officer. Petty Officers are non-commissioned officers in the Navy who have specific ranks that indicate their level of responsibility and experience within the organization. The ranks of Petty Officer include Petty Officer First Class, Petty Officer Second Class, and Master Chief Petty Officer.

Seamen Apprentice, on the other hand, is an entry-level rank for enlisted sailors who are in training or just beginning their careers in the Navy. This rank does not carry the responsibilities or qualifications associated with Petty Officer ranks. Petty Officers typically have more advanced training, experience, and leadership roles compared to Seamen Apprentice, who are still in the early stages of their naval training. Thus, identifying Seamen Apprentice as the correct answer aligns with the understanding of rank structures within military organizations.