Your vessel's drafts are: FWD 14'-04", AFT 15'-02"; and the KG is 23.2 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 1.0 foot off the centerline.
• Use of the blue pages stability curves in the Stability Data Reference Book • Relationship between GZ (righting arm), GM (metacentric height), and a small angle of list when G is off centerline • Effect of transverse shift of G on creating a list angle
• From the given drafts and KG, which specific blue-page stability curve should you be using in the book? • For a small transverse shift of G, how do you relate the horizontal separation between G and the centerline to the righting arm and the resulting list angle? • Once you obtain the relevant stability curve, what value do you read from the curve to match a 1.0-foot off-center shift of G and then convert that into an angle of list?
• Confirm you are using the correct displacement curve that matches the given mean draft and KG • Verify you are reading the righting arm (GZ) values for list, not for trim or some other condition • Double-check that the 1.0-foot shift of G is properly related to the GZ scale or GM value before matching it to an angle on the curve
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