Which document serves as a key guideline for the preparation of correspondence within the Navy?

The document that serves as a key guideline for the preparation of correspondence within the Navy is SECNAV M-5216.5. This manual provides comprehensive instructions on the standards, formats, and procedures necessary for effective correspondence. It ensures clarity and consistency in communication between various naval personnel and departments.

SECNAV M-5216.5 is integral for maintaining formal communication protocols and reflects the values and operational standards of the Navy. It covers everything from the structure of correspondence to specific phrases and layouts, which are essential for professionalism within all forms of correspondence. Utilize this manual to ensure that all written communications meet the service's requirements and effectively convey the intended message.

The other documents listed serve different purposes; for example, OPNAVINST 3120.32 provides guidance on naval operational instructions, while NAVPERS 15665I and NAVPERS 18068F pertain to personnel administration and policy, but they do not specifically focus on correspondence preparation.