🔍 Key Concepts

• Parts of a ship’s hull below the waterline • Difference between the parallel mid-body and the after underwater shape • How water flows along the hull toward the stern

💭 Think About

• Which choice refers specifically to the underwater shape of the hull aft, not just the visible back end of the vessel? • Think about ship plans: what do naval architects call the region where the hull tapers from the parallel mid-body toward the propeller and stern? • Which term is commonly used in describing the flow of water to the propeller and rudder, affecting resistance and efficiency?

✅ Before You Answer

• Eliminate terms that mainly describe the above-water aft end rather than the immersed hull form. • Focus on the term used in hull form design and resistance calculations, not general ship anatomy. • Ask: which of these is used when talking about the tapering underwater afterbody on a lines plan?