Why can the vessel's GM not be used as an...

Question 1 / 2707066636eec28f7522a1c51c41c

Question 1 of 2707066636eec28f7522a1c51c41c

Why can the vessel's GM not be used as an indicator of stability at all angles of inclination?

Question 1 of 27070

Why can the vessel's GM not be used as an indicator of stability at all angles of inclination?

🔍 Key Concepts

• Transverse metacentric height (GM) definition and when it applies • Difference between initial stability (small angles) and stability at large angles of heel • Behavior of the metacenter (M) as the ship heels over

💭 Think About

• Think about how the positions of G (center of gravity) and B (center of buoyancy) change as the ship heels: which one is fixed for a given loading condition, and which one moves? • Is the metacenter (M) a single, permanent point for all angles of heel, or is it only defined in a specific range of angles? • What does GM actually measure: stability at all angles, or just the ship’s tendency to return to upright from very small angles?

✅ Before You Answer

• Recall that GM is derived from the slope of the GZ curve near 0–10° of heel (initial stability only). • Verify which point, G or M, is considered constant for a given loading condition at small angles, and what happens to that point at large angles. • Confirm whether the definition of M (metacenter) remains valid at large angles of inclination or only for small angles.

Question 1 of 27070

Why can the vessel's GM not be used as an indicator of stability at all angles of inclination?

There is no G at large angles

There is no M at large angles

M is not fixed at large angles

G is not fixed at large angles

Question 1 / 2707066636eec28f7522a1c51c41c

Question 1 of 2707066636eec28f7522a1c51c41c

Why can the vessel's GM not be used as an indicator of stability at all angles of inclination?

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Question 1 of 27070

Why can the vessel's GM not be used as an indicator of stability at all angles of inclination?