ModelC/N Derivatives & Versions of PV-18 ModelYearHistory HUP-1 / UH-25A Retriever HUP-2 / UH-25B Retriever HUP-3 / UH-25C Retriever H-25A / CH-25A Army Mule 1952 1952 List of Operators of PV-18 Years Model Org 1948/65 US Navy 1949/64 US Marine Corps 1953/65 HUP-2 / UH-25B Retriever Aéronautique Navale 1953/58 H-25A / CH-25A Army Mule US Army Aviation 1954/64 H-25A / CH-25A Army Mule Royal Canadian Navy (1945-1968) 1978- Aviodome Global Distribution of PV-18 70ch-25a31uh-25a234uh-25b1pv-18
US Navy 
Aéronautique Navale 
Royal Canadian Navy (1945-1968) 
Aviodome 