Exam Question
Q3
Sketch and describe the construction of a bulbous bow. Why is such an arrangement fitted on a merchant ship?
Class 2 (2nd Engineer)
SC&S
📅 Mar 2026
Reference Answer
### 1. Introduction to the Bulbous Bow
A bulbous bow is a protruding bulb at the bow of a ship just below the waterline. It is an integral part of the hull structure, designed primarily to reduce the ship's resistance as it moves through the water, thereby improving fuel efficiency and/or speed. The bulb modifies the way water flows around the hull, specifically targeting the reduction of wave-making resistance.
### 2. Construction of a Bulbous Bow
The construction of a bulbous bow is a complex process requiring careful integration with the main hull structure to withstand significant hydrodynamic and structural loads. It is typically part of the forepeak tank.
A bulbous bow is a protruding bulb at the bow of a ship just below the waterline. It is an integral part of the hull structure, designed primarily to reduce the ship's resistance as it moves through the water, thereby improving fuel efficiency and/or speed. The bulb modifies the way water flows around the hull, specifically targeting the reduction of wave-making resistance.
### 2. Construction of a Bulbous Bow
The construction of a bulbous bow is a complex process requiring careful integration with the main hull structure to withstand significant hydrodynamic and structural loads. It is typically part of the forepeak tank.
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