Under the federal regulations of 33CFR Subchapter O, what is the definition of a "Type III Marine Sanitation Device"?

Correct Answer: Option B — A device that is designed to prevent the overboard discharge of treated or untreated sewage or any waste derived from sewage.

A Type III MSD is a holding tank system designed to prevent the overboard discharge of treated or untreated sewage. It retains all waste onboard for later disposal at a shore-based reception facility, making it the most effective method for compliance in designated no-discharge zones or sensitive coastal waters.