1589. In the diagram, items '2A and 2B' represent the overboard discharge valves of the ballast system illustrated. According to 46 CFR Part 56, which of the following statements is correct if the vessels length between perpendiculars is 500 feet, and the through hull opening is four feet above the summer load line

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Accepted Answer

only one valve is required, but must be positive closing and include the automatic non-return feature.

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