Your vessel's drafts are: FWD 14'-00", AFT...

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Question 1 of 2066636eec28f7522a1c51d110

Your vessel's drafts are: FWD 14'-00", AFT 14'-08"; and the KG is 25.8 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the remaining righting arm at 30? inclination if the center of gravity is 1.5 feet off the centerline.

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Question 1 of 20

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🔍 Key Concepts

• Use of stability cross curves (or selected stability curves) to find a GZ value at a given displacement and heel angle • Effect of a horizontal shift of G off the centerline on the righting arm at a given angle of heel • How to apply the Pythagorean / trigonometric relationship between transverse shift of G and reduction in GZ

💭 Think About

• First, think about what the original GZ at 30° would be from the selected stability curve for this draft/dispacement before any off‑center shift of G. • Next, consider how a 1.5‑foot transverse shift of G changes the righting arm at 30°: does it reduce GZ by the horizontal component of that shift at that angle? • After you adjust the original GZ for the off‑center G, compare your computed remaining GZ with the answer choices and see which is closest.

✅ Before You Answer

• Verify you are using the correct displacement/curve in the blue pages for the given drafts (check the mean draft and corresponding displacement). • Check that you are using 30° heel on the cross/selected curve and reading off the uncorrected GZ value accurately before applying any correction. • Confirm that your correction for the off‑center G uses the correct trigonometric function of the heel angle and the full 1.5‑foot shift, and that you subtract (not add) this from the original GZ.

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