Exam Question
Briefly explain the following ship terms used:
(a) LOA
(b) LBP
(c) Breadth Extreme
(d) Breadth Moulded
(e) Depth extreme
(f) Depth Moulded
(g) Draught Extreme
(h) Draught Moulded
Class 4 (4th Engineer)
SC&S
📅 Jul 2024
Reference Answer
### Principal Ship Dimensions: Definitions and Applications
The following terms define the principal dimensions of a ship. It is crucial to distinguish between **Moulded** dimensions, which are used for design, classification, and hydrostatic calculations (measured to the inner surface of the plating or 'frame line'), and **Extreme** dimensions, which represent the overall physical size for operational clearance (berthing, canals, drydocks).
#### (a) LOA (Length Overall)
* **Definition:** The maximum length of the vessel measured horizontally between the extreme forward-most point of the bow and the extreme after-most point of the stern.
The following terms define the principal dimensions of a ship. It is crucial to distinguish between **Moulded** dimensions, which are used for design, classification, and hydrostatic calculations (measured to the inner surface of the plating or 'frame line'), and **Extreme** dimensions, which represent the overall physical size for operational clearance (berthing, canals, drydocks).
#### (a) LOA (Length Overall)
* **Definition:** The maximum length of the vessel measured horizontally between the extreme forward-most point of the bow and the extreme after-most point of the stern.
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