As the OOD, I’ve seen a couple S-3s launched from TR while at anchor in Halifax, Canada. I’ve also seen a C-2 and OV-10s launch via deck runs without using the cats from TR while underway at less than 10 knots. The OV-10s had too, I’m not sure why the C-2 did it.
Around 1986 or 1987, I was on Carl Vinson as a liaison officer and watched Miss Piggy (US-3) trap while we were anchored at Mombasa, Kenya. She brought Commander, 7th Fleet. They shot her off while anchored the next day when he left.
So this doesn’t surprise me.