Vessel carrying black gold (3,6)

I believe the answer is:

oil tanker

(Other definitions for oil tanker that I've seen before include "Ship carrying "black gold"" , "craft" , "Fuel transport ship" , "On which crude" , "boat" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.