Q3. 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.
C. List the different sophisticated coatings which are available.
Q5. Referring to various alternatives to tin-based Antifouling paints, discuss the following:
(A) Hull roughness of different types of antifouling paints.
(B) Enhancement of foul release coatings by oil incorporation.
(C) Personnel and health safety during application of AF paints.
Q2. a) Briefly discuss Anti fouling convention and state all Documents and records to be maintained on a ship to demonstrate Anti fouling convention compliance.
c) Discuss various alternatives to tin-based antifouling paints, with specific reference to the following types: - (i) Controlled Depletion Polymer (CDP) paint; (ii) Self-Polishing Copolymer (SPC) paint; (Ill) Hybrid TBT free paint ; (iv) Fouling Release paint.
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