🔍 Key Concepts

• Relationship between rolling period (how fast/slow the ship rolls) and stability • Difference between slow, easy roll and quick, snappy roll • What off-center weights or asymmetrical loading usually cause in a vessel’s motion

💭 Think About

• Think about what kind of rolling motion you feel on a vessel that is very stiff (high stability) versus one that is tender (low stability). Which one rolls slowly and which one snaps back quickly? • If a vessel were taking on water or had off-center weights, how would that usually show up: as a list to one side, a trim by bow or stern, or mainly as a change in the speed of rolling? • Which of these options directly describes an overall stability characteristic, and which describe more specific loading or damage conditions?

✅ Before You Answer

• Be clear on the meaning of stability: resistance to rolling and ability to return to upright. • Ask yourself what slow, sluggish roll says about the vessel’s tendency to return to upright quickly or slowly. • Check which choices describe a symptom (like flooding or trim) versus a fundamental stability condition.