Cadets may in time be promoted to Non-commissioned officer (NCO) ranks, which are based on the rank structure of the Royal New Zealand Navy. New members are referred to by the rank of "New Entrant", before progressing to "Ordinary Cadet", then "Able Cadet", which are awarded following the completion of a test administered by the unit. Ranks above this (in order: "Leading Cadet", "Petty Officer", "Chief Petty Officer", "Warrant Officer" and "Under Officer") are only awarded after the completion of joint training courses held with other units of the Sea Cadets, as well as the Air Training Corps and New Zealand Cadet Corps. Cadet ranks are often abbreviated by omitting the "Cadet" suffix.