🔍 Key Concepts

• Tank boundary bulkheads are designed to contain a specific type of liquid cargo • Difference between watertight, airtight, and boundaries meant to hold oil or fuel • Regulatory terminology used in ship construction for cargo and fuel tanks

💭 Think About

• Ask yourself: what is the primary function of a bulkhead that forms the side of a fuel or cargo oil tank? To keep out water, to keep in air, or to keep in a specific liquid? • Consider where you would find watertight bulkheads versus the bulkheads that form the sides of fuel or oil tanks. • Think about which term is commonly used in ship construction plans and stability books when referring to boundaries of fuel or cargo oil tanks.

✅ Before You Answer

• Verify which option refers specifically to containing oil or liquid cargo rather than just excluding water. • Check that the term you choose is standard in ship construction terminology for tank sides and ends. • Eliminate any options that do not clearly relate to liquid cargo containment in a tank boundary.