Not sure about Old Olaf but isn't McCaffrey's The Ship Who Sang a bioship?
More of a cyborg -- human brain in a mechanical "body."
Hmm, I understand that the earlier stories of that series implied it was a case of little more than a brain wired to a mechanical body, but didn't one of the later books reveal she was actually a tragically deformed body, though more or less whole, encased within a life support module sealed within the ship? That would make her something more akin to a benevolent Kaled mutant, a nice "Dalek". I recall that only because it frustrated some fans' expectations and they were a bit vocal about it.