Which of the following technologies would be associated with a Type III marine sanitation device?

Official USCG Answer & Rule Citation

Correct Answer: Option C — Sewage holding tank

Under 33 CFR Part 159, a Type III Marine Sanitation Device (MSD) is defined as a holding tank. It does not treat sewage but simply retains it for later discharge to a shore-side facility or in waters where overboard discharge is legally permitted, ensuring compliance with environmental protection regulations.

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