You are on the SS American Mariner and...

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Question 1 of 2066636eec28f7522a1c51cba8

You are on the SS American Mariner and involved in a collision. Your draft has increased uniformly and there is about 4 feet of freeboard remaining. The vessel is on an even keel and has a long rolling period. The roll is sluggish, and the vessel hangs at the ends of a roll. Which of the following actions would you take First to correct the situation?

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Question 1 of 20

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🔍 Key Concepts

• Effect of free surface on stability and rolling period • Relationship between KG (height of center of gravity) and rolling period/sluggish roll • Priority of damage control and stability actions after collision

💭 Think About

• Based on the description (even keel, long and sluggish roll, hanging at the ends), what does this tell you about the vessel’s current stability (GM – metacentric height)? • Which option most directly improves stability without risking a sudden loss of buoyancy or reserve stability? • After a collision, which tanks or spaces is it safest to alter first: intact bottom tanks, slack tanks, or flooded cargo spaces?

✅ Before You Answer

• Identify which choices increase or decrease KG and whether that helps a vessel with a long, sluggish roll. • Check which action could worsen flooding or reduce buoyancy if done first after a collision. • Think about which choice most reduces free surface effect in the largest volume of water.

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