Master Chiefs (E-9) are subject to the same time-in-rate and service requirements that all other ranks are, but the manning requirements of their rate determine how many are selected. For example, smaller rate communities will have fewer E-9's, while bigger ones will have more.
All advancements are determined by evaluations, recommendations, time, and manning requirements. However, just because you meet the requirements doesn't mean you'll get promoted.
About 30 years ago, the Navy instituted a policy of mandatory retirement for senior enlisted and officers to deal with the problem of being top-rank heavy, i.e., having senior ranks who were unwilling to retire on their own. I knew a Master Chief when I was in Submarine School in Groton who had almost 40 years in, and was one of the first ones affected by the change. This policy freed up the positions held by senior enlisted rates, and got the promotion process rolling again.
Only the top people in their rates are ever selected for Master Chief, but like anything in leadership, rank doesn't necessarily mean ability. Most are the best leaders, but the Navy clearly sometimes makes mistakes, and occasionally some real idiots are promoted. But that's the case with anything in the Government.
To become a Master Chief in the Navy, one needs to have a minimum of 22 years of active service. Promotion to the rank of Master Chief Petty Officer is based on a combination of factors including performance evaluations, leadership abilities, educational achievements, and completion of required professional development courses. The selection process also involves a review board that evaluates the candidate's career accomplishments and potential for further advancement.
Master Chief Petty Officer of the Navy Rick D. West .
Master Chief Johnson
There are currently 16 Force Master Chief Petty Officers in the Navy. Below this answer is a link for further information on the subject.
Gunners Mate Master Chief
Fran Walker is the wife of the now retired, third Master Chief Petty Officer of the Navy, Robert (Bob) Walker.
Master Chief Petty Officer of the Navy
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Master Chief Petty Officer Of The Navy
Master Chief Billy C. Sanders.
January 13th, 1967, GMCM Delbert Black was selected to be the first Senior Enlisted Advisor of the Navy. On April 28th, 1967, the post was renamed to Master Chief Petty Officer of the Navy.
A former boss of mine was career navy, and held the rank of Master Chief Petty Officer. He told me his pay scale was E-9.
Delbert D. Black