Exam Question
With regard to the carriage of crude oil and its associated products, state a few differences in the constructional features of a conventional tanker and a double hull tanker.
Class 4 (4th Engineer)
SC&S
📅 Oct 2023
Reference Answer
### Introduction
The primary constructional difference between a conventional (single hull) and a double hull tanker, as mandated by MARPOL Annex I, Regulation 19, is the provision of a complete second watertight envelope around the cargo-carrying section of the vessel. This fundamental design change introduces several significant differences in their structural features, operational characteristics, and maintenance requirements.
### Detailed Constructional Differences
1. **Hull Structure and Ballast Tank Configuration:**
The primary constructional difference between a conventional (single hull) and a double hull tanker, as mandated by MARPOL Annex I, Regulation 19, is the provision of a complete second watertight envelope around the cargo-carrying section of the vessel. This fundamental design change introduces several significant differences in their structural features, operational characteristics, and maintenance requirements.
### Detailed Constructional Differences
1. **Hull Structure and Ballast Tank Configuration:**
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