Class 4 (4th Engineer) SC&S 📅 Jan 2025

Exam Question

(a) Sketch and describe the midship section of a bulk carrier, labelling the structural members. (8)

(b) A vessel 40 m long has a constant cross-section in the form of a trapezoid 10 m wide at the top, 6 m wide at the bottom and 5 m deep. It floats in sea water at a draught of 4 m. Calculate its displacement. (8)

Reference Answer

### Part (a) Midship Section of a Bulk Carrier
A bulk carrier is a ship specially designed to transport unpackaged bulk cargo, such as grains, coal, ore, and cement, in its cargo holds. The midship section is representative of the ship's main cargo-carrying portion and reflects its unique structural requirements for strength and cargo handling efficiency.
**Key Structural Features and Functions:**
* **Overall Structure**: Bulk carriers are characterized by large, unobstructed cargo holds to facilitate easy loading and discharge. The hull structure is designed to provide significant longitudinal strength to counteract hogging and sagging stresses, as well as torsional strength to resist twisting forces in a seaway.

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