Captain of engineering
From Memory Alpha, the free Star Trek reference.
Captain of Engineering is the title given to chief engineers who hold the rank of captain.
In 2285, Montgomery Scott was ordered to report to the new transwarp vessel, the USS Excelsior as the captain of engineering. (Star Trek III: The Search for Spock)
- He may have kept that title aboard the USS Enterprise-A, however, he was described as the "chief engineer" by Kirk in Star Trek VI: The Undiscovered Country.


