An Enterprise lieutenant who manned the helm in 2267 when the ship came upon the drifting SS Botany Bay and who was on the bridge when Khan cut off its air.
Lieutenant Spinelli appears in the episode Space Seed, occupying the helm position usually filled by Sulu.
He is at his post as the Enterprise intercepts an old DY-100 class vessel sending an automated signal, and follows Kirk's orders to bring the ship alongside and later to take it in tow towards Starbase 12.
When Khan and his revived followers take over engineering, they shut off life support to the bridge. Spinelli is among the officers who slowly lose consciousness there while Kirk records commendations for them in what he expects to be his last log entry. He recovers with the rest once the ship is retaken. He was played by Blaisdell Makee, who returned in a different role in The Changeling.