The sailing drafts are: FWD 23'-02", AFT...

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Question 1 of 2066636eec28f7522a1c51cc4b

The sailing drafts are: FWD 23'-02", AFT 24'-06" and the GM is 2.8 feet. Use the information in Section 1, the blue pages, of the Stability Data Reference Book to determine the available righting arm at 30° inclination.

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🔍 Key Concepts

• Righting arm (GZ) and how it relates to GM and heel angle • How fluid GM and displacement are used with the curves in the Stability Data Reference Book blue pages • Effect of trim (different forward and aft drafts) when entering the curves or tables

💭 Think About

• From the given drafts, what displacement and GM would you enter in the blue‑page tables or curves? • At 30° of heel, are you reading GZ directly from a curve, or are you applying a correction based on GM or displacement? • Looking at a typical GZ curve, does GZ usually increase or decrease as heel goes from small angles up to around 30°?

✅ Before You Answer

• Be sure you are using the correct displacement and GM line/column for the drafts given • Confirm that you are reading the 30° column/curve, not 20° or 35° • After estimating a reasonable GZ at 30°, check whether each option is too small or unrealistically large for a vessel with GM ≈ 2.8 ft

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