Captain, you are so right about them not issuing them again.
Shortly before I was commissioned in 1977, being the AR individual that I am, I started researching/asking Qs about what non-billet tasks I could be assigned. Learned about boat officers (especially as I was headed to a gator). Looked up every regulation/book I could find. One of the regs stated what equipment the crew of a small craft was to be issued/have. The reg stated that boat crew members should carry either a MK1 or a MK2, with the MK1 being the preferred tool. (Actually, it stated that a MK1 was the prescribed equipment, but a MK2 was an acceptable substitute in the event MK1s were unavailable).
Being the diligent future commissioned officer I was, I went down to the local surplus store and bought a fair condition PAL RH-35 in a NORD sheath for the whopping price of $6. (I already had a MK2, so OBVIOUSLY a MK1 was required purchase.


). Slow forward to October 1977. I was on my first deployment to the WESTPAC and we were conducting a joint USN/RPN amphibous exercise off Mindoro Island. I was assigned as the boat officer for the medical evacuation small boat (an LCVP). When it was time to start boring holes in the ocean, I showed up at the boat davits with my helmet and kapok sporting the venerable WW2 vintage MK1. As it was 0-dark-thirty, no one noticed it. I also failed to notice that none of my boat crew had MK1s. ( come to find out, all they had were Buck 110s in leather belt sheaths because that what was being sold in the ship's store).
8 hours later, when debarking, the 1st LT saw it and asked "What the hell is that thing?" (He literally did not know what a MK1 was.) When I told him it was my boat crew knife and asked why all my boat crew members didn't have them issued per regs? OOOOPPSS. (You know, out of the mouths of babes and dumb Ensigns come all kinds of questions.)
Apparently the regulation specifying the required boat crew member equipment list had not been modified at the same time that the requirement to issue MK1s had been deleted. I got a lot of ribbing in the wardroom for a while until I asked "If a crewman is caught in a bight, how fast can you get a folding knife out of a sheath and unfolded?" I then said "I can get a sheath knife out "this fast"" and had it out before I finished saying it. No more ribbing about my MK1.