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Ballast was introduced into a cargo tank on a chemical tanker which has been washed to such an extent that the ballast contains less than 1 ppm of the substance previously carried.
At which conditions may this ballast be pumped overboard?

23 Jul '19, 14:22

July 23, 2019, 2:22 p.m.
KnowledgeBase's gravatar image


The vessel should be not less than 12 miles from the nearest land and is in water that is not less than 25 meters deep.

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23 Jul '19, 14:24

July 23, 2019, 2:24 p.m.
marinexpert's gravatar image

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