Crude tanker sized to fully transit the Suez Canal in laden condition — typically 120,000-200,000 DWT, ~250 m LOA, ~17 m draft.
Regulatory detail & full definition
Defined by the Suez Canal's draft limit (post-2010 enlargement: 20.1 m air draft / 20.1 m draft). Used heavily on West Africa - US Gulf and Black Sea - Mediterranean trades. Recent Suez Canal expansions allow Aframax-Suezmax-VLCC convoys; VLCCs only transit ballast.