Exam Question
Sketch a double bottom tank for storage of fuel oil tank and ballast water, showing the position of all internal fittings. On an internal inspection, what defects will you look for? (16)
Class 4 (4th Engineer)
SC&S
📅 Dec 2022
Reference Answer
### **Part 1: Double Bottom Tank Sketch and Internal Fittings**
A double bottom tank designed for the carriage of either fuel oil or ballast water is a critical structural and operational component of a vessel. Its design incorporates robust framing and various fittings to ensure structural integrity, safe handling of liquids, and ease of inspection and maintenance. A sketch would show a transverse cross-section.
**Key Structural Components and Fittings:**
* **Tank Top Plating:** Forms the top boundary of the tank and the floor of the cargo hold or engine room above.
A double bottom tank designed for the carriage of either fuel oil or ballast water is a critical structural and operational component of a vessel. Its design incorporates robust framing and various fittings to ensure structural integrity, safe handling of liquids, and ease of inspection and maintenance. A sketch would show a transverse cross-section.
**Key Structural Components and Fittings:**
* **Tank Top Plating:** Forms the top boundary of the tank and the floor of the cargo hold or engine room above.
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