Tour vessel's drafts are: FWD 22'-09", AFT...

Question 1 of 2707066636eec28f7522a1c51cf41

Tour vessel's drafts are: FWD 22'-09", AFT 23'-07"; and the KG is 24.2 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the righting arm at 18° inclination.

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Question 1 of 27070

🔍 Key Concepts

• How to select the correct stability curve in the blue pages using draft and trim (FWD/AFT drafts) • How to apply the vessel’s KG (height of center of gravity) to modify the statical stability (GZ) curve, if required • Reading the righting arm (GZ) value correctly at a specific angle of heel (18°) from the curve, including interpolation if needed

💭 Think About

• Which displacement and trim condition in the blue pages best matches a vessel with drafts 22'-09" FWD and 23'-07" AFT? • Once on the correct stability curve, how do you locate 18° on the horizontal axis and find the corresponding righting arm on the vertical axis? • Do you need to apply any correction for KG = 24.2 feet, or does the chosen curve already reflect that KG value?

✅ Before You Answer

• Confirm you are using the correct loading/stability curve that matches both drafts (FWD and AFT) as closely as possible • Verify the units of GZ on the vertical axis (feet vs. meters) and match them to the answer choices • Double-check the value at exactly 18°—if there is no exact tick mark, use proper interpolation between the nearest angles instead of guessing