The rank insignia of the PO2 is three gold chevrons, point down, surmounted by a gold maple leaf. PO2s are generally initially addressed as "Petty Officer Bloggins", or "PO Bloggins", and thereafter as "PO", although in correspondence the full rank or abbreviation is used before the member's name. The full appellation "Petty Officer 2nd-Class" or "PO2" in speech is generally used only when the "second-class" distinction be made, such as to distinguish between members with similar names but differing ranks, or on promotion parades.The corresponding NATO rank is OR-6. However, "Petty Officer 2nd-Class" with less than 3 years seniority are considered OR-5.