Using the information in Section 1, the blue...

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Question 1 of 2066636eec28f7522a1c51d054

Using the information in Section 1, the blue pages, of the Stability Data Reference Book, determine the danger angle for permanent list if the KG is 21.2 feet and the drafts are: FWD 27'-11", AFT 28'-07".

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🔍 Key Concepts

• Stability Data Reference Book – Section 1 (Blue Pages) tables and how to read them • Relationship between KG (height of center of gravity), mean draft, and danger angle for list • How interpolation is used when the exact KG or draft is not in the table

💭 Think About

• First, find or calculate the mean draft from the given forward and aft drafts, then locate the correct line or column in the blue pages based on that draft range. • Check which KG value in the blue-page table is closest to 21.2 ft, and think about whether you must interpolate between two KG entries. • Consider what the danger angle for permanent list represents physically: at what heel angle will the vessel just reach the point where it can remain listed without returning upright?

✅ Before You Answer

• Confirm the mean draft is correctly calculated using the given FWD and AFT drafts before entering any table. • Verify you are in the correct table for danger angle for permanent list in Section 1, not a different stability limit table. • If 21.2 ft KG is between two tabulated values, make sure you interpolate in the correct direction and only between the relevant rows/columns.

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