Your vessel's drafts are: FWD 24'-06", AFT 25'-04"; and the KG is 22.2 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the righting arm at 20° inclination.
• Using the blue pages stability curves for a given displacement and KG • How KG affects the righting arm (GZ) compared to the base curve (KN) • Interpolating between draft/displacement curves if the exact value is not shown
• What displacement (or deadweight condition) in the blue pages corresponds most closely to drafts FWD 24'-06" and AFT 25'-04"? • After you read the uncorrected KN (or GZ) at 20°, how do you correct it for a known KG of 22.2 feet? • Do you need to interpolate between two curves, or is there a curve that closely matches the actual condition?
• Confirm you are using the correct displacement curve that matches the given drafts as closely as possible • Verify you applied the KG correction properly (subtracting the correction from the base righting arm, not adding) • Check that the final GZ value at 20° is in feet, not meters, and compare its approximate size to the answer choices
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