If nothing else them Scrapjack class boats were fast.ditto, we had just sold a number of them (SS 560s range) to the Iranian navy when I served in subs. The boat I was assigned to was NEARLY as old....USS Shark. And even though it was a nuke, it still had a diesel for backup power. And yes everybody used (gyro)compass in those days, backed up by NAVSAT, LORAN-C and shooting the stars / sun.
:-}
I was on the Haddo and Flying Fish with a tour in Groton as an instructor between boats.