With MEPC.227(64), the International Maritime Organization (IMO) formally adopted a new discharge standard for the treatment of offshore and marine sewage. More specifically, the guidelines call for a reduction in the amount of total suspended solids and adjusting discharge limits based on a seawater dilution compensation factor. MARINER wastewater treatment systems have a long history of helping small to medium vessels comply with discharge standards. And now the MARINER system is being upgraded to the MARINER 64 to comply with the more stringent standard.