Infographic Tanker Sizes and Capacities Share There are five principle sizes of oil tankers. In ascending order based on size, the smallest is the Panamax, Aframax, Suezmax, VLCC and the ULCC. Published March 22, 2018 | Last modified on September 6, 2023 You may also be interested in Report West Coast Spill Response Study 1 Report Tanker Safety Expert Panel II: Arctic Infographic 2018 Public Opinion Poll: Canadians’ Attitudes Towards Marine Shipping – 3