🔍 Key Concepts

• vessel stability and how the center of gravity moves • what happens when liquid can move side-to-side in a partially filled tank • difference between liquid sloshing inside a closed tank vs. water freely entering the hull

💭 Think About

• Think about which option describes liquid shifting inside a tank and how that might make a vessel easier to tip. • Ask yourself: which effect reduces a vessel’s ability to right itself without necessarily changing the draft very much? • Consider whether the problem is added buoyancy, less buoyancy, or a change in the way weight is distributed when the vessel heels.

✅ Before You Answer

• Identify which term refers to liquid moving across a tank and increasing the heeling moment. • Eliminate any options that mainly describe water flowing in and out of the hull, rather than just moving inside a tank. • Check which options would primarily change displacement or draft, versus which one mainly changes stability (metacentric height/righting arm).