What is "chief petty officer"

n. 1 (context Canada Navy English) An warrant officer belonging to one of the two classes of chief petty officer: chief petty officer first class and chief petty officer second class. 2 (context UK Navy English) A non-commissioned officer in the Royal Navy, ranking above petty officer and below warrant officer class 2. 3 (context US Navy English) A non-commissioned officer in the United States Navy and United States Coast Guard, ranking above petty officer first class and below senior chief petty officer.

n. a person with the senior noncommissioned naval rank

A chief petty officer is a senior non-commissioned officer in many navies and coast guards.

Chief Petty Officer (CPO) is the seventh enlisted rate (E-7) in the United States Navy and U.S. Coast Guard, just above petty officer first class and below senior chief petty officer. The rate of chief petty officer is that of a senior non-commissioned officer, and was established on 1 April 1893 for the United States Navy. The United States Congress first authorized the Coast Guard to use the promotion to chief petty officer on 18 May 1920. Chief petty officer is also the final cadet rate in the U.S. Naval Sea Cadet Corps.

Prior to 1958, chief petty officer was the highest enlisted rank in both the U.S. Navy and U.S. Coast Guard. This changed on 20 May 1958 with the passage Public Law 85-422, the Military Pay Act of 1958, which established two new pay grades of E-8 and E-9 in all five branches of the U.S. Armed Forces. In the U.S. Navy and U.S. Coast Guard, the new E-8 pay grade was titled Senior Chief Petty Officer (SCPO) and the new E-9 pay grade as Master Chief Petty Officer (MCPO), with the first selectees promoting to their respective grades in 1959 and 1960.

Prior to establishment of the E-8 and E-9 grades, Chief Petty Officers could typically serve in uniform for 30 or more years.

Shortly following establishment of the E-8 and E-9 grades, service limits currently known as High Year Tenure (HYT) were established by pay grade. Although these limits periodically flex based on Fleet manpower requirements, current HYT limits restrict Chief Petty Officers not selected for promotion to Senior Chief Petty Officer to 24 years of service, after which they face mandatory retirement.

Similar limits of 26 years for Senior Chief Petty Officers and 30 years for Master Chief Petty Officer are currently used, with a smaller core of Master Chief Petty Officers serving in Command, Force or Fleet Master Chief Petty Officer positions in the Navy and Area or the Coast Guard Reserve Force Master Chief in the Coast Guard, being eligible to remain in uniform for 32 to 35 years and with the Master Chief Petty Officer of the Navy and the Master Chief Petty Officer of the Coast Guard being permitted to remain in uniform until reaching 38 years of service.