Class 4 (4th Engineer) MEKM 📅 Jul 2025

Exam Question

(a) Briefly explain the construction and functions of a bedplate in a slow speed marine diesel engine? (8)

(b) How is the bedplate fastened to the hull structure? (4)

Reference Answer

### (a) Construction and Functions of a Bedplate (8 Marks)
#### Construction
The bedplate is the foundational component of a large, slow-speed marine diesel engine, upon which the entire engine is built. Its construction is designed for immense strength and rigidity.
* **Fabrication:** Modern bedplates are typically fabricated structures, constructed by welding together heavy steel plates and cast or forged steel sections. This method provides high strength and allows for a more optimized design compared to a single large casting.

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