How much oil does a tanker hold?
There are six categories of tanker, Medium range, Panamax, Aframax, Suezmax, very large crude carriers (VLCCs), and ultra large crude carriers (ULCCs). Each tanker category has different capacity to hold oil. VLCCs, or supertankers, have the capacity of over 200,000 DWT and can carry 2 million barrels of oil. ULCCs can carry in excess of 320,000 DWT or about three million barrels of oil.