Class 2 (2nd Engineer) SC&S 📅 Dec 2018

Exam Question

With respect to Inclining Experiments onboard vessels:

(a) Sketch and Describe briefly the inclining experiment and explain how the results are used. (6)

(b) A forward deep tank 12 m long extends from a longitudinal bulkhead to the ship's side. The widths of the tank surface measured from the longitudinal bulkhead at regular intervals are 10, 9, 7, 4 and 1 m. Calculate the second moment of area of the tank surface about a longitudinal axis passing through its centroid (10)

Reference Answer

(a) An inclining experiment is conducted to determine a ship's metacentric height (GM) and, consequently, the location of its centre of gravity (CG). Knowing the CG of an empty vessel allows for calculations of its position under various loading conditions.
The inclining experiment is performed on:
Newly built ships.
After major alterations to the vessel.

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