IMO to grapple with ‘significant’ challenge: water rendering treatment systems inoperable 4 May 2022 Shipowners’ groups and flag states seek measures to smooth the path of bypassing ballast water systemAuthor: Capt. Johnhttps://www.tradewindsnews.com/esg/imo-to-grapple-with-significant-challenge-water-rendering-treatment-systems-inoperable/2-1-1208331