How many numbered N Codes are there in the Navy system?

The Navy's personnel system includes a set of numbered N Codes, which are used for various purposes including identification and classification of personnel, duties, and responsibilities. There are six numbered N Codes established within the system. Each N Code corresponds to a specific set of guidelines and requirements that help in organizing and managing personnel effectively. These codes play a crucial role in administrative processes, ensuring that personnel are categorized correctly for assignments, training, and promotions. Understanding the structure of these N Codes is essential for navigating the Navy's personnel management framework.