🔍 Key Concepts

• Relationship between displaced volume of water and buoyant force • Definition of center of the underwater volume of the hull • Difference between weight acting point and buoyant force acting point

💭 Think About

• Ask yourself: which term refers specifically to the geometric center of the underwater volume of the ship? • Which option describes the point through which the upward buoyant force acts, not the downward weight? • Which of these terms is used when discussing how a vessel floats and returns to upright after being heeled (stability)?

✅ Before You Answer

• Identify which option is associated with the center of weight of the ship vs. the center of displaced water • Eliminate any term that refers only to the waterplane area at the surface instead of the entire immersed volume • Verify which term is used in basic ship stability diagrams showing the interaction of weight (G) and buoyant force (B)