Correct Answer:
A. Regular inspection and cleaning of joints to prevent galvanic corrosion, application of protective coatings to both aluminum and steel surfaces, and periodic replacement of anodes if used for cathodic protection.
Explanation:
- A. Correct: Regular maintenance involves inspecting and cleaning the joints to prevent galvanic corrosion, applying protective coatings to both aluminum and steel to protect against corrosion, and replacing anodes if used to prevent corrosion. This approach ensures the structural integrity of the vessel over time.
- B. Incorrect: Regular repainting of the aluminum alone is insufficient. Both the aluminum and steel surfaces need protective coatings to prevent corrosion, and the steel hull should not be left uncoated.
- C. Incorrect: Replacing all steel components is excessive and not a standard maintenance practice. Contact with seawater is unavoidable, but the focus should be on preventing corrosion rather than eliminating seawater exposure.
- D. Incorrect: Temperature monitoring is not typically a major concern for maintaining structural integrity in this context. The main focus should be on preventing corrosion and maintaining protective coatings.
Correct Answer:
A. Regular inspection and cleaning of joints to prevent galvanic corrosion, application of protective coatings to both aluminum and steel surfaces, and periodic replacement of anodes if used for cathodic protection.
Explanation:
- A. Correct: Regular maintenance involves inspecting and cleaning the joints to prevent galvanic corrosion, applying protective coatings to both aluminum and steel to protect against corrosion, and replacing anodes if used to prevent corrosion. This approach ensures the structural integrity of the vessel over time.
- B. Incorrect: Regular repainting of the aluminum alone is insufficient. Both the aluminum and steel surfaces need protective coatings to prevent corrosion, and the steel hull should not be left uncoated.
- C. Incorrect: Replacing all steel components is excessive and not a standard maintenance practice. Contact with seawater is unavoidable, but the focus should be on preventing corrosion rather than eliminating seawater exposure.
- D. Incorrect: Temperature monitoring is not typically a major concern for maintaining structural integrity in this context. The main focus should be on preventing corrosion and maintaining protective coatings.