The Psychotic Network Ferret on Nostr: Yes, and so named because the original Enterprise NX-01's class was actually called ...

Yes, and so named because the original Enterprise NX-01's class was actually called the NX class.

So, I've always assumed that it continued to be used in the experimental role, and that hull IDs between it and the NCC series never overlapped.

But my point is, the letter at the end wasn't even used consistently. When USS Sao Paulo became the next Defiant, she was re-hulled as NX-74205, and NOT NX-74205-A as one might expect.

Now, this was actually because the special effects budget didn't want to pay to re-shoot a bunch of stuff just to add an A to the hull.

But that is how we define canon, so, word up, j0.