Your vessel is damaged and is listing to...

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Question 1 of 2066636eec28f7522a1c51d0cf

Your vessel is damaged and is listing to port. The rolling period is short. There is sufficient freeboard so that deck edge submersion is not a problem. What corrective action should be taken FIRST in regard to the vessel's stability?

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Question 1 of 20

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🔍 Key Concepts

• Transverse stability and what a short rolling period tells you about GM (metacentric height) • Difference between correcting a list (off-center weight) vs improving stability (GM, free surface, KG) • How free surface effect in slack tanks changes GM and rolling period

💭 Think About

• Ask yourself: if the ship is already rolling with a short period, does that suggest GM is too small, about right, or already large? How does that affect which correction to prioritize? • Which option directly addresses the cause of a list due to off-center weight versus options that change GM or add/remove weight overall? • Think about which action removes a negative influence on stability without unnecessarily adding or removing weight first.

✅ Before You Answer

• Verify which options change GM by affecting KG (vertical center of gravity) versus those that mainly correct list (transverse shift of G). • Check which choice specifically reduces free surface effect rather than creating new free surfaces or additional weight high up. • Confirm that the first corrective action should be one that improves the vessel’s overall stability characteristics without introducing new risks, given that freeboard and deck edge immersion are not yet a concern.

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