Class 2 (2nd Engineer) MEKG 📅 Sep 2025

Exam Question

(a) Describe the preparation necessary before the application (In dry dock) of sophisticated or approved long life coating to the underwater surface of the hull.

(b) State the significance of the roughness profile.

Reference Answer

### (a) Preparation for Coating Application in Dry Dock
Preparation of the underwater hull surface is the most critical stage in ensuring the adhesion, integrity, and planned service life of a sophisticated long-life coating system. Any failure in preparation will lead to premature coating breakdown, corrosion, and fouling. The process must be meticulously controlled and inspected at each stage.
**1. Initial Inspection and Assessment:**
* Upon docking, the hull is inspected by the Superintendent, Paint Manufacturer's Representative, and Shipyard Foreman.

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