Where does this come from, and can I check it?

Tanks filled in one port are filtered, irradiated or dosed before discharge so stowaway species do not spread. The figure is taken from International Maritime Organization, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a technology fact?

Yes. It sits on the Technology shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Ships must treat ballast water before release

Tanks filled in one port are filtered, irradiated or dosed before discharge so stowaway species do not spread A cargo ship takes on ballast when it unloads and discharges it when it loads, moving millions of tonnes of water between coasts each year. The Ballast Water Management Convention, in force since 2017, requires treatment that kills or removes organisms before release. Systems combine filters, ultraviolet lamps and chemical dosing, and each type must pass approval tests. It sits in Mondo's technology collection, one of 200 facts that each trace back to the reference below.

Where this comes from

International Maritime Organization

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Tags: ships, environment, regulation

Ships must treat ballast water before release: the short answers

Where does this come from, and can I check it?: Tanks filled in one port are filtered, irradiated or dosed before discharge so stowaway species do not spread. The figure is taken from International Maritime Organization, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a technology fact?: Yes. It sits on the Technology shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.