🔍 Key Concepts

• Potable water system purpose and what it supplies on board (drinking, cooking, washing) • Relationship between potable water, feedwater/boiler systems, and fire-main systems • How water is normally distributed from a storage source to users on a ship

💭 Think About

• Ask yourself: which option represents the usual source or storage that delivers water to the potable water piping? • Which systems listed are normally kept separate from drinking water to prevent contamination? • Think about where the ship actually stores safe drinking water before it goes to taps, showers, and galley sinks.

✅ Before You Answer

• Verify which system is designed specifically for human consumption and hygiene and not machinery use or firefighting. • Check which systems (feed-water, fire-main, sanitary) would likely contaminate drinking water if directly connected. • Confirm in your mind: potable water piping usually starts at a dedicated storage tank filled with treated fresh water and then distributes it around the vessel.