[d4rk3lf]

The question is why would Sauron needed the ring in Numenor?
He was a prisoner, and then later, an advisor. He doesn't need the ring to be king's advisor.

Also, it seems perfectly logical to me, that Sauron left the ring to Nazguls during negotiations, so if he got killed during negotiations, he could resurrect again (after all, he did that after the destruction of Numenor. His body was killed, and he resurrect again in Barad Dur, with the help of the ring, I think).