From what I can remember, Hoshi:
Adding all that up, Hoshi should have been a lieutenant, first class, at the very least. I suspect that for the Beebs, calling her an ensign was merely a way of saying that she was green. (Unless there's a different explanation ...)
- earned a degree with honors from a university independently of SF training,
- went through SF academy,
- held a university professorship (meaning she probably published in her field),
- was an expert in a field that SF desperately needed experts,
- programmed a piece of machinery that SF depended on.
Adding all that up, Hoshi should have been a lieutenant, first class, at the very least. I suspect that for the Beebs, calling her an ensign was merely a way of saying that she was green. (Unless there's a different explanation ...)