ZP: Airship Patrol Squadron (US Navy Aviation unit designation used from 1942 to 1961)

What does ZP mean? The above is one of ZP meanings. It may have other definitions. Please refer to the end of this passage.

ZP: Airship Patrol Squadron   (US Navy Aviation unit designation used from 1942 to 1961)

Definition in English: Airship Patrol Squadron (US Navy Aviation unit designation used from 1942 to 1961)