The agency says the 46,000-dwt Bow Lind (built 2011) was held in New Haven, Connecticut after an investigator uncovered what is known as a “magic pipe”, a configuration of hoses and flanges used to bypass a ship’s oily water separator (OWS) and send slops overboard.

“The vessel's crew was discharging the oily water mixture collected in the machinery space engine room bilge wells into the sea via the sewage holding tank's overboard discharge valve using hoses and a pneumatic pump without processing the mixtures through the installed and approved oil filtering equipment OWS,” officials explained in a subsequent report.

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