Class 4 (4th Engineer) SC&S 📅 Oct 2022

Exam Question

(a) Describe how an inclining experiment is carried out (6)

(b) If the density of seawater is 1.025 t/m3 and the density of fresh water is 1.000 t/m3, prove that the statutory fresh water allowance is ∆/40 TPC cm.

A ship of 12000 tonne displacement loads in water of 1.012 t/m3. By how much will the summer laod line be submerged if it is known that 130 tonne must be removed before sailing? The TPC in seawater is 17.7 (10)

Reference Answer

### (a) Inclining Experiment Procedure
The inclining experiment is a mandatory stability test performed on a new ship and after major modifications to determine its lightship weight and the exact coordinates of its center of gravity (KG and LCG). This data is crucial for the preparation of the ship's stability booklet.
**1. Pre-Experiment Conditions & Preparations:**
* **Vessel Condition:** The ship must be as near to its lightship condition as practicable. A detailed survey is conducted to identify all items that are not part of the lightship weight (e.g., crew, stores, dunnage, excess water) and all items that are part of the lightship but are not on board.

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