Your vessel's drafts are: FWD 18'-06", AFT 19'-01"; and the KG is 18.2 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the righting arm at 35° inclination.
• Using the Stability Data Reference Book blue pages to select the correct displacement and KG curve • How KG = 18.2 ft affects the righting arm (GZ) values taken from the curves • Reading the GZ (righting arm) at a specific angle of heel (35°) from the plotted curves
• Which curve(s) in the blue pages correspond to a KG that is equal to or just higher than 18.2 ft, and how should you interpolate if needed? • At 35° of inclination, how do you correctly read the GZ value from the curve without mixing up units or axes? • How do changes in KG generally affect the size of the righting arm—does a higher KG increase or decrease GZ for the same angle?
• Confirm you are using the correct displacement/draft condition page based on the given drafts FWD and AFT • Verify that you are reading the 35° heel line (or scale) accurately on the graph • Double-check that the value you select is in feet, not meters or inches, and that it matches the approximate magnitude you’d expect for this KG and angle of heel
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