Which statement about metacentric height is true: (a) indicates initial stability, (b) below centre of buoyancy, (c) measured above centre of buoyancy, (d) objective of inclining experiment?
Short answer
| Option | True/False | Reason |
|---|---|---|
| (a) | True | GM directly indicates initial stability |
| (b) | False | Metacentre M is above centre of buoyancy B |
| (c) | False | GM is vertical distance between G and M |
| (d) | False | Inclining experiment determines KG, not GM |
- Correct statement: (a) It is used to indicate the quality of initial stability
- GM definition: vertical distance between centre of gravity G and metacentre M
- Formula: GM = KB + BM – KG
- Positive GM: stable equilibrium, righting moment
- Inclining experiment: determines KG; GM = KM – KG
- M position: metacentre lies above centre of buoyancy B
Full answer
The full answer explains each point step by step, with the regulations and figures behind it and the discussion from other candidates. It is in the MEO Class IV section of the Marine One forum, open to members enrolled for the MEO Class IV exam.