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 The Latest Workshop/Webinar Webinar – Beyond the Horizon: smartWhales Report 2024 Public Opinion Poll: Canadians’ Attitudes Towards Marine Shipping Workshop/Webinar Webinar: Canadians’ Opinions on Marine Shipping in 2024