Class 4 (4th Engineer) SC&S 📅 Feb 2024

Exam Question

(a) Explain clearly the meaning of the term 'reserve buoyancy' (6)

(b) When a mass of 6 t is moved transversely through a certain distance on a ship of 4300 t displacement, the deflection of an 11 m pendulum is found to be 120 mm. The transverse meta-centre is 7.25 m above the keel and KG 5.46 m. Find the distance through which 6 t was moved (10)

Reference Answer

### (a) Explanation of 'Reserve Buoyancy'
**1. Definition:**
Reserve buoyancy is the volume of the enclosed, watertight part of the ship located above the operational waterline. It represents the potential buoyancy which is not currently being used to support the ship's weight but is available to provide additional buoyant force if the ship's draft increases due to flooding, wave action, or added weight.
**2. Purpose and Significance:**

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