What defines a no-discharge zone (NDZ)?

• A. Areas where discharge of wastewater, ballast water, or other pollutants is prohibited or strictly regulated.
• B. Zones where ballast water discharge is allowed with caution.
• C. Regions where only graywater is prohibited.
• D. Areas where dumping is permitted after midnight.

Answer: (A)

NDZs designate areas where discharging wastewater, ballast water, or other pollutants is prohibited or strictly regulated to protect water quality and sensitive habitats along coasts. In these zones, vessels must not release any wastewater or ballast water; they typically must retain waste on board or discharge only at approved facilities or under special permit conditions. The idea is stronger than ordinary rules, not milder, and it applies regardless of time or type of discharge.