A tanker is a bulk carrier designed to transport liquid cargo, most often petroleum products Oil tankers vary in size from small coastal vessels of 1,500 tons deadweight, through medium-sized ship of 60,000 tons, to the giant VLCCs (very large crude carriers)
A vessel designed for transporting fluid cargoes in bulk but also used for the transport of grain
A tanker is a large truck, railway vehicle, or aircraft used for transporting large quantities of a substance. a vehicle or ship specially built to carry large quantities of gas or liquid, especially oil oil tanker