Your vessel's drafts are: FWD 15'-09", AFT...

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Question 1 of 2066636eec28f7522a1c51d119

Your vessel's drafts are: FWD 15'-09", AFT 16'-08"; and the KG is 23.6 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the angle of list if the center of gravity is shifted 0.9 foot off the centerline.

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Question 1 of 20

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🔍 Key Concepts

• Using the vessel’s displacement and KG to select the correct stability curve in the blue pages • Relationship between G off centerline, GM, and angle of list (using the statical stability curve / KN curve) • Converting G off centerline into a heeling arm and finding where it intersects the righting arm curve

💭 Think About

• Which specific curve in the blue pages applies to a ship with these drafts and KG? How do you confirm you picked the right one before doing any angle work? • Once the center of gravity moves 0.9 ft off centerline, what is the corresponding constant heeling arm, and how is that shown on or related to the GZ (righting arm) curve? • At what angle does the righting arm (from the curve) balance the heeling arm caused by shifting G? How can you find that graphically or by interpolation?

✅ Before You Answer

• Be sure you are using the correct displacement for the given drafts (check the hydrostatic data that matches 15'-09" FWD and 16'-08" AFT) • Confirm the KN or GZ curve you select matches the given KG = 23.6 ft (pay attention to which KG the curve is drawn for or how to apply it) • Verify that the heeling arm line you use is consistent with a 0.9 ft shift of G (check both magnitude and direction) before reading the angle where it intersects the stability curve

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