Not nearly the biggest ship! I've sailed 300,000 tonners myself which drew 72' of water. They were a little shorter at 1100' but 190' wide and 30' deeper when loaded and they were considered VeryLargeCrudeCarriers not even UltraLargeCrudeCarriers! If you add the tonnage of the biggest Aircraft Carrier to all it's supporting vessels, it doesn't make 300,000 tonnes let alone the 400,000 tonnes of the ULCC'sor the 564,763 tonnes of the Knock Nevis!