Your vessel's drafts are: FWD 16'-08", AFT...

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Question 1 of 2066636eec28f7522a1c51d11b

Your vessel's drafts are: FWD 16'-08", AFT 17'-06"; and the KG is 23.8 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the remaining righting arm at 60? inclination if the center of gravity is 1.7 feet off the centerline.

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Question 1 of 20

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🔍 Key Concepts

• GZ (righting arm) curve use from the Stability Data Reference Book blue pages • Effect of an off-center KG on righting arm: use cosine of the heel angle to find the heeling lever due to KG off centerline • How to find the remaining righting arm: subtract the off-center heeling lever from the original GZ at that angle

💭 Think About

• From the drafts given, identify which displacement/stability curve page in the blue pages you should be using before you read any GZ values. • At 60° heel, what is the original GZ from the selected curve, and how do you compute the horizontal lever caused by a KG that is 1.7 ft off the centerline? • Once you have both the original righting arm and the off-center heeling lever at 60°, how do you combine them (add or subtract) to get the remaining righting arm?

✅ Before You Answer

• Make sure you are using the correct displacement curve that matches the vessel’s drafts given. • Use the correct trigonometric function: the horizontal lever from an off-center KG at a heel angle is KG off-center × cos(heel angle) (check your calculator is in degrees). • After finding the remaining GZ, compare it carefully to the closest choice in feet; watch for rounding errors.

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