Who designates in writing those individuals authorized to act as qualifiers?

The correct choice indicates that the Commanding Officer is the individual who designates in writing those authorized to act as qualifiers. This authority is crucial in ensuring that the correct personnel are responsible for overseeing the qualification process, maintaining standards, and ensuring compliance with regulations. The Commanding Officer typically has the highest level of responsibility and oversight within a unit, making them the appropriate authority to designate qualifiers based on their experience, expertise, and leadership.

In a naval training environment, proper delegation is essential for the maintaining of safety and operational effectiveness. By designating qualifiers, the Commanding Officer ensures that those individuals understand the requirements of the qualification process and can accurately assess the competency of others.

Other roles such as the Executive Officer, PQS Coordinator, and Department Head may have significant responsibilities and influence within a unit, but the ultimate authority for such designations rests with the Commanding Officer. Each of these roles could play a supportive part in the qualification process, but they do not have the same level of authority as the Commanding Officer when it comes to formal written designations.