Which range best represents typical shipboard potable water consumption per day?

• A. 1-5
• B. 50-75
• C. 12-35
• D. 100-150

Answer: (C)

Planning shipboard potable water starts with estimating how much water each person needs daily for drinking, cooking, sanitation, and basic hygiene. The range that fits typical crew needs across different climates and workloads is about 12 to 35 liters per person per day, which is roughly 3 to 9 gallons. This gives enough water for essentials while recognizing that actual use can vary with activity level and conditions. Values much lower than this would fall short of basic needs, while numbers as high as 50–75 liters or 100–150 liters per person per day would require far more storage and supply than is normally planned for on most vessels. So, 12–35 liters per person per day best reflects standard shipboard potable water consumption.