Bellamya was a supertanker, built in 1976 by Chantiers de l'Atlantique at Saint-Nazaire for the French branch of Shell Oil. She was the second Batillus class supertanker. Bellamya, together with her sister ships Batillus, Pierre Guillaumat and Prairial, was one of the biggest ships in the world, surpassed in size only by Seawise Giant (later Jahre Viking, Happy Giant and Knock Nevis) built in 1976, and extended in 1981, although the four ships of the Batillus class had a larger gross tonnage. If size is indicated by gross tonnage--a measure of volume--Bellamya was the largest ship ever built.