As googling PN and Navy would have turned up, PN used to operate e.g. ex-USN Gearing class ships and ex-UK County class ship. In their day, these were classified destroyers. Is there a problem with that?
Of 98 Gearings built for USN, many were sold to the navies of Argentina, Brazil, Greece, Ecuador, Iran, Mexico, Pakistan, South Korea, Spain, Taiwan, Turkey and Uruguay, and served through the 1990s.
http://www.defence.pk/forums/pakistan-navy/82782-ex-usn-gearings-pn-service.html
HMS London was sold to Pakistan on 23 March 1982 and renamed Babur. Babur was decommissioned from Pakistani service in 1993 and was sold for scrap in 1995.
Well, no, not exactly.