The Master Chief Petty Officer of Starfleet is a unique non-commisioned rank in the Federation Starfleet. The holder of this post is the senior enlisted member of Starfleet. They are appointed by the Chief of Starfleet Operations to serve as a spokesperson to address the issues of enlisted personnel to the highest positions in Starfleet. As such, they are the senior enlisted advisor to the CSO. Their exact duties vary, depending on the CSO, though they generally devote much of their time to traveling throughout Starfleet observing training and talking to enlisted crewmembers and their families.
|22nd century||2230s||AR 2250s||2250s||2265-2270s||Early 2270s||Late 2270s-2350s|
|Enlisted personnel||Non-commissioned officers||Etc||Officers||Flag officers|