Inspected Vessels and Offshore Structures Require Marine Sanitation Devices

All marine sanitation devices (MSDs), whether type I, II or III, must be US Coast Guard (USCG) certified for inspected or uninspected vessels with galley(s) and toilet facilities.

According to USCG, type II MSDs must comply with the 33 Code of Federal Regulation (CFR) Part 159 regulations "to prevent discharge of untreated sewage from vessels into the waters of the US."

From their website, the System Engineering Division (CG-ENG-3) of USCG states: "In addition to the MSD requirements in 33 CFR part 159, inspected vessels must also comply with the marine engineering regulations in 46 CFR Subchapter F and the marine electrical regulations in 46 CFR Subchapter J."

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