UYK 20 guy here
I toured the core memory factory in mInnesota after I got out of the service, interviewed there.. but it was on the tail end of its use in the mid70s.. I went into data cards instead.
The Marines got all the Navy hand me downs. some of the early UYKs were hugh, old fire control, trays of cards with hugh components. The UYK-5 was a lot of small circuit cards.
UYK-7s were the latest when I left and looked pretty slick, could have shipped over and worked with them, opted to go civvie instead and ended up working on a bunch of minis and micros , mainframe and servers in the SillyCon Valet parking lot over the years.. talk about shrinkage. lol