Exam Question
(a) Define 'light displacement' and 'load displacement' (6)
(b) Aship 120m long displaces 11000 tonne and has a wetted surface area of 2500m2. Calculate the displacement and wetted surface area of a 6 m model of the ship (10)
Class 4 (4th Engineer)
SC&S
📅 Nov 2022
Reference Answer
### Part (a): Definitions
#### Light Displacement
Light Displacement, also known as 'Lightship Weight' or 'Lightweight', is the mass or weight of a ship as built and ready for sea, but excluding any items that are consumed or variable. It represents the empty weight of the vessel. According to SOLAS regulations and naval architecture standards, this includes:
* **Hull Structure:** The complete hull, superstructures, and all structural components.
#### Light Displacement
Light Displacement, also known as 'Lightship Weight' or 'Lightweight', is the mass or weight of a ship as built and ready for sea, but excluding any items that are consumed or variable. It represents the empty weight of the vessel. According to SOLAS regulations and naval architecture standards, this includes:
* **Hull Structure:** The complete hull, superstructures, and all structural components.
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