Aircraft › PBY-5, PB2B-1Catalina ICatalina ICatalina IModification ofPBY-5, PB2B-1Produced109ChangesRAF direct purchase, same as the PBY-5 with six .303 guns (bow, four in the waist blisters, one aft of the hull step) and R-1830-S1C3-G engines.Engines2