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Q1. A. With reference to the underwater surface of a ship’s hull; i. describe a hull plate roughness analyser system; ii. State the significance of the roughness profile and compare the typical roughness values for a new ship and a ship eight years old.

B. With reference to the application of self polishing pint in dry dock; - i. Describe the plate preparation necessary; ii. State the defects that may occur in the paint coating if it is not correctly applied.