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 June 20, 2024 Trending Article Marine shipping in the Great Lakes: What you need to know Article Quieter ship design: New-build and retrofit options Article From Paper Charts to Satellites: A Journey Through the Evolution of Marine Navigation