OUPV & 100-Ton Master · Pollution — Marine Sanitation Device
A vessel with an installed toilet operating on U.S. navigable waters must have a:
- APortable bucket only
- BDirect overboard discharge line
- CCoast Guard-certified Marine Sanitation Device (MSD)✓ Correct
- DNo requirement
Explanation
Installed toilets require a certified MSD. Type I and II treat sewage to a discharge standard; Type III is a holding tank for retention. In a No-Discharge Zone, even treated sewage may not be discharged (Type III/secured required).
Authority: 33 CFR Part 159
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