If your marine toilet has a y valve you do no discharge zone?

If your marine toilet has a Y-valve, it allows you to switch between discharging waste overboard or into a holding tank. In No Discharge Zones (NDZs), you must ensure the Y-valve is set to the holding tank position to comply with regulations. Discharging waste overboard in these areas is prohibited to protect marine environments. Always check local laws and guidelines regarding waste disposal in marine settings.