Mass of oil capacity of a TI-class supertanker

Mass of oil capacity of a TI-class supertanker (518 million kg)

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Mass of oil capacity of a TI-class supertanker (518 million kg)

is 1/2500 of Mass of all the Earth's land mammals (1.3 trillion kg)...more
is 10 x Mass of the Titanic (52 million kg)...more
is 20 x Mass of world silver production (2014) (26 million kg)...more

If this was a standard unit ...