The SS AMERICAN MARINER is ready to bunker...

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Question 1 of 2066636eec28f7522a1c51cbf5

The SS AMERICAN MARINER is ready to bunker with drafts of FWD 14'-04", AFT 18'-08". After all bunkers are on board, soundings indicate the tonnages shown in table ST-0176 below. Use the white pages of The Stability Data Reference Book to determine the free surface correction.

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Question 1 of 20

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🔍 Key Concepts

• Use the Free Surface Correction (FSC) table in the white pages for SS AMERICAN MARINER and be sure you are on the bunker condition page, not departure or arrival. • Identify which tanks listed (DB = double bottom, DT = deep tank) are partly filled liquid tanks contributing to free surface, and which are pressed full or empty and therefore ignored for FSC. • Remember that total FSC is usually found by summing the individual free surface moments for all slack tanks, then dividing by the vessel’s displacement in long tons for that condition.

💭 Think About

• From the table in the problem, which of the listed tanks would realistically be slack after bunkering, and how do you know from the Stability Data Reference Book pages? • Once you have the free surface moment for each slack tank from the book, what is the formula to turn that combined moment into a correction to the GM in feet? • How does the vessel’s displacement, found from the given drafts and hydrostatic data, affect whether the final correction is closer to 1.0 ft or 1.3 ft?

✅ Before You Answer

• Verify you used the correct displacement for the final bunkered condition (from the draft and hydrostatic tables), not the initial condition. • Confirm you only included slack liquid tanks in your free surface calculation; ignore any tanks shown as pressed full or empty in the Stability Data Reference Book condition. • Double-check that you are using the FSC values in consistent units (long tons·feet and feet) so that the final correction is in feet of GM.

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