What is the minimum rank of the president of the E-7 selection board?

The minimum rank of the president of the E-7 selection board is Captain. This is established in various Navy personnel policies, where the authority and responsibilities of selection boards are clearly defined. A Captain, typically an O-6 rank, possesses the requisite experience and understanding of the Navy's promotion processes and personnel management necessary to lead such a board.

Commanders, while also capable leaders, hold the rank of O-5 and are generally not appointed to preside over boards tasked with selecting personnel for advancement to E-7. Selection boards for higher enlisted ranks require leadership that can assess readiness and qualifications from a broader perspective, which is why a Captain is designated as the minimum rank for this role, ensuring that the selection process is managed with appropriate seniority and oversight.

Thus, having a Captain in charge ensures that there is appropriate leadership experience and authority during the evaluation of candidates for promotion to E-7.