Beginning January 1, 2020, Singapore's Maritime Port Authority will ban discharge into the ocean of "wash water" that is created when ships capture sulfur from engine exhausts using open-loop exhaust gas scrubbers. The ban is being imposed to prepare one of the world's busiest ports for International Maritime Organization rules that will require ships to use cleaner fuels beginning in 2020, including reducing the sulfur content in fuel from 3.5% to below 0.5%. For the full story, see https://uk.reuters.com/article/us-singapore-shipping-environment-imo/si….