On small passenger vessels, drains or outlets for drawing off diesel fuel from water traps or strainers __________.

Correct Answer: Option A — are permitted

46 CFR 182.440 allows for drains or outlets on diesel fuel strainers or water traps. Unlike gasoline systems, which have stringent containment requirements to prevent vapor accumulation, diesel fuel systems permit these drains to facilitate routine maintenance and the removal of water or contaminants from the fuel supply.