Class 4 (4th Engineer) SC&S 📅 Jul 2025

Exam Question

With regards to the metacentric height, which of the following statements is true?

(a) It is used to indicate the quality of initial stability.

(b) It is located below the centre of buoyancy

(b) It is measured vertically above the centre of buoyancy

Briefly justify your answer. (16)

Reference Answer

The correct statement is: **(a) It is used to indicate the quality of initial stability.**
### Justification for Correct Statement (a)
Initial stability refers to a vessel's tendency to return to its original upright position after being heeled by a small external force (typically for angles up to 10-15 degrees). The Metacentric Height (GM) is the primary quantitative measure of this characteristic.
1. **Definition of Metacentric Height (GM):**

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