In accordance with international MARPOL Annex V regulations and federal regulations under 33CFR Subchapter O, the prohibition of the discharge of dunnage, lining, and packing materials that float applies to a vessel operating within how many nautical miles of the nearest land?

Correct Answer: Option C — 25 nautical miles

MARPOL Annex V prohibits the discharge of floating dunnage, lining, and packing materials within 25 nautical miles of the nearest land. These materials pose a significant hazard to navigation and marine life. Vessels must retain these items onboard until they reach a distance greater than 25 nautical miles from land.