A vessel's drafts are: FWD 16'-03", AFT 16'-09"; and the KG is 21.3 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 2 feet off the centerline.
• Transverse shift of center of gravity (GG₁) and its effect on list angle • Relationship between KG, KM, and GM (metacentric height) when using stability curves • How to use the selected stability curves (blue pages) for a vessel at a given mean draft
• What is the mean draft from the given forward and aft drafts, and which stability curve (by draft) in the blue pages should you be using? • Once you know KG and the correct KM from the curve, what is GM, and how does a 2‑foot transverse shift of G relate to tan(θ)? • After you estimate θ from the GG₁ and GM relationship, which multiple‑choice angle is closest to the angle you obtain from your calculation/curve reading?
• Be sure you are using the correct draft curve in the blue pages based on the vessel’s mean draft, not just forward or aft draft alone. • Confirm you compute GM = KM − KG correctly using the KM read from the curve and the given KG of 21.3 ft. • Double‑check that you convert the 2‑foot GG₁ shift into an angle using the correct relationship (involving tan(θ) and GM), and that your final angle is reasonable for such a shift and GM.
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