Class 2 (2nd Engineer) SC&S 📅 Nov 2024

Exam Question

(a) Explain how to distinguish between list and loll and describe how to return the ship to the upright in each case. (6)

(b) A ship of 5000 tonnes displacement has a double bottom tank 12 m long. The 1/2 breadths of the top of the tank are 5, 4 m and 2 m respectively. The tank has a watertight centreline division. Calculate the free surface effect if the tank is partially full of freshwater on one side only. (10)

Reference Answer

(a) Distinguishing between List and Loll:
1. List is caused by Uneven distribution of weight within the ship. List will have the below conditions:
GM is positive (GM > 0).
The centre of gravity (G) is off-centre.

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