Your vessel's drafts are: FWD 22'-04", AFT...

Question 1 of 2707066636eec28f7522a1c51d13d

Your vessel's drafts are: FWD 22'-04", AFT 22'-10"; and the KG is 18.4 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the righting arm at 30° inclination.

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Question 1 of 27070

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🔍 Key Concepts

• Displacement and trim from the drafts given • How to find GZ (righting arm) using standard stability curves when KG is known • Effect of KG on GZ and which curve or correction to use in the blue pages

💭 Think About

• From the forward and aft drafts, what is the approximate mean draft and why does that matter for choosing the correct stability curve? • When you know KG, do you use the basic GZ curve directly, or do you apply a correction to get the effective righting arm at 30°? • At 30° of heel, should the resulting GZ be relatively small or relatively large compared to the maximum GZ on a typical curve?

✅ Before You Answer

• Make sure you pick the correct displacement/mean draft curve before reading off any GZ values • Verify you are using the curve corrected for the given KG (18.4 ft) or applying the proper KG correction method from the book • Double‑check that you are reading GZ at exactly 30° and converting any scale units properly to feet