Many vessels are provided with flume tanks,...

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Question 1 of 2066636eec28f7522a1c51c6c8

Many vessels are provided with flume tanks, which also have a dump tank located under the flume tanks. In the event the ship is damaged, you could dump the flume tanks into the dump tank which would __________.

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🔍 Key Concepts

• free surface effect and how it changes when liquid is in a wide slack tank versus contained in a more restricted space • the meaning of KG (height of the ship’s center of gravity above the keel) and what happens to KG when weight is moved vertically down or up • how a dump tank below the flume tank changes both the free surface and the vertical position of the liquid’s weight

💭 Think About

• Think about what causes free surface effect in a tank. If you move the same liquid into a different tank, what features of the new tank would make the free surface effect larger, smaller, or unchanged? • When you dump from the higher flume tank into a lower dump tank, is the ship’s weight moving up or down? How does moving weight down affect KG? • Compare each option: separate the part that talks about free surface from the part that talks about KG. Which combinations (increase/decrease, raise/lower) logically match what happens when liquid is moved downward into a more confined tank?

✅ Before You Answer

• Be clear on the definition: KG increases when weight moves up, and decreases when weight moves down. • Verify whether the dump tank is located below the flume tanks and typically has less free surface effect than the original flume tank. • For each answer choice, check if both the free surface statement and the KG statement can be true at the same time for this situation. Eliminate any choice where one part contradicts basic stability principles.

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