(Canada, Navy) A warrant officer in the Canadian Forces Maritime Command, ranking above petty officer second class and below chief petty officer second class.

plural of petty officer first class

(Canada, Navy) A non-commissioned officer in the Canadian Forces Maritime Command, ranking above master seaman and below petty officer first class.

plural of petty officer third class

(US, Navy) A non-commissioned officer in the United States Navy and United States Coast Guard, ranking above seaman and below petty officer second class.

(US, Navy) A non-commissioned officer in the United States Navy and United States Coast Guard, ranking above chief petty officer and below master chief petty officer.

plural of petty officer second class

(US, Navy) A non-commissioned officer in the United States Navy and United States Coast Guard, ranking above senior chief petty officer.

plural of warrant officer class 2

(Australia, Army) A warrant officer in the Australian Army, ranking above warrant officer class 2 and below regimental sergeant major.