Aframax is a medium-sized crude tanker with a dead weight tonnage (DWT) ranging between 80,000 and 120,000. The tanker derives its name from AFRA which stands for Average Freight Rate Assessment. Due to their favorable size, Aframax tankers can serve most ports in the world. These vessels serve regions that do not have very large ports or offshore oil terminals to accommodate very large crude carriers and ultra-large crude carriers. Though relatively smaller than Very Large Crude Containers (VLCC) and the Ultra Large Crude Containers (ULCC), the tanker has a cargo carrying capacity between 70,000 and 100,000 metric tonnes. The average cargo carrying capacity of Aframax is approximately 750,000 barrels.

Aframax tankers are optimal for short- to medium-haul crude oil transportation and this class of tankers are largely used in the basins of the Black Sea, the North Sea, the Caribbean Sea, the South and East China Seas, and the Mediterranean. Aframax tankers are just perfect for short to medium haul crude oil transportation.