Heavy tank
The Char 2C was one of the largest tanks ever produced. At the start of World War II, France and the Soviet Union were the only countries to have inventories of heavy tanks, such as the Char B1, T-35, and KV-1. The Matilda II was designed under the British infantry tank concept which is similar to the heavy tank having thick armor and weighing more than their other tanks. It’s usually separate because they have less firepower with their cruiser tanks (comparable to mediums) at the time having the same main armament but more machine guns. Later war examples were the German Tiger I and II, as well as the Soviet IS series. Note that "heavy" versus "medium" is more a question of tactical roles than weight; the Panther, for example, was a "medium" tank that outweighed most Allied "heavy" tanks.
Batillus
Batillus was a supertanker, built in 1976 by Chantiers de l'Atlantique at Saint-Nazaire for the French branch of Shell Oil. The first vessel of homonymous Batillus class supertankers. "Batillus", together with her sister ships "Bellamya, 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.