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

Exam Question

(a) What is the purpose of conducting an inclining experiment on a new vessel? (6)

(b) A mass of 6 t is moved transversely through a certain distance on a ship of 4300 t displacement, when 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 the mass of 6 t was moved. (10)

Reference Answer

### (a) Purpose of the Inclining Experiment (6 Marks)
The inclining experiment is a mandatory practical test performed on a newly constructed vessel, or a vessel that has undergone significant structural modification, to determine its precise lightship characteristics. Its primary purposes are:
1. **Determination of Lightship Weight (Displacement):** To accurately find the actual weight of the ship as-built, complete in all respects, but without consumables, stores, cargo, crew, and effects. This is the baseline weight from which all future loading conditions are calculated.
2. **Determination of the Centre of Gravity (G):**

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