🔍 Key Concepts

• Function of deck fittings related to cargo or fuel tanks • How excess liquid or overflow from a tank is safely directed • Difference between drainage for rainwater and overflow protection for tanks

💭 Think About

• Think about which option best describes a way for a tank (fuel, ballast, or other liquid) to safely discharge excess contents without damaging the structure. • Ask yourself: which of these choices sounds like it is specifically designed for accidental overfilling or overflow rather than normal drainage or garbage disposal? • Consider where such a pipe would normally terminate: overboard, on deck, or into another enclosed space?

✅ Before You Answer

• Identify which option clearly relates to overflow or excess liquid from a tank, not just general deck water. • Eliminate any choice that is mainly about rainwater drainage, garbage, or anchor chains, since those are separate systems. • Confirm that the remaining choice would reasonably prevent structural damage or unsafe pressure from a tank being overfilled.