Your vessel's drafts are: FWD 14'-11", AFT...

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Question 1 of 2066636eec28f7522a1c51d117

Your vessel's drafts are: FWD 14'-11", AFT 16'-01"; and the KG is 23.2 feet. What is the righting moment when the vessel is inclined to 15? ? (Use the reference material in Section 1, the blue pages, of the Stability Data Reference Book)

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Question 1 of 20

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🔍 Key Concepts

• Using the vessel’s mean draft to enter the hydrostatic tables in Section 1 (blue pages) • Relationship between KM, KG, and GM (GM = KM − KG) • How to get the righting arm GZ at 15° and then the righting moment = Displacement × GZ

💭 Think About

• How do you find the vessel’s displacement and KM from the hydrostatic data when forward and aft drafts are different? • Once you know GM, how can you use the stability curves / table for GZ at 15° in the blue pages to find the righting arm for this loading condition? • After you obtain GZ for 15°, what multiplication (and in what units) gives you a value that can be compared directly with the answer choices in foot‑tons?

✅ Before You Answer

• Be sure you use the correct mean draft: ( T_m = (T_f + T_a)/2 ) in feet and inches converted properly to decimal feet. • Confirm that you subtract KG from KM in the correct order: GM = KM − KG, not the reverse. • Verify that your final answer’s units are foot‑tons and that you are using the displacement in long tons from the hydrostatic table, not cubic feet or metric tons.

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