I casually thought they were pulling them off ships for some newer systems.
I know they replaced the pom-pom guns (Bofors) on the battleships at the time.
You’re probably right. That was 1980 technology that I saw. It was an interesting last trip to sea though. We were doing a three day shakedown and weapons testing post overhaul trip out and back to the yards. I saw something else while at sea in Oct. 80. We had an LPH at about 3:00 our starboard maybe 4 miles out. I was seeing planes {not helos} approaching it’s stern and would disappear and not fly on past. They disappeared at right about the island. This happened several times and we were too far away to see what was happening. One guy walked up & yelled WOW look at the Harriers over there LOL.