Use the material in Section 1, the blue...

Question 1 of 2921866636eec28f7522a1c51d037

Use the material in Section 1, the blue pages, of the Stability Data Reference Book. If the KG is 25.2 feet, and the drafts are: FWD 27'-11", AFT 28'-09"; at what angle will the vessel lose positive stability?

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Question 1 of 29218

🔍 Key Concepts

• Transverse stability and the meaning of "lose positive stability" (angle of vanishing stability / downflooding or deck edge immersion) • How to use the Stability Data Reference Book, Section 1 (blue pages): reading cross curves / KN curves and applying KG to find righting arm GZ • Relationship between GZ, GM, and angle of heel: when righting arm becomes zero, stability is lost

💭 Think About

• From the given drafts, what displacement or loading condition should you select in the blue pages tables for this vessel? • Once you have the correct displacement page, how do you adjust the KN data for the given KG to obtain GZ at various angles? What are you looking for in that GZ curve? • What specific stability limit (e.g., GZ = 0, deck edge immersion, or another marked limit) corresponds to the phrase "lose positive stability" in this reference book?

✅ Before You Answer

• Verify you are using the correct displacement / draft condition page that matches the given drafts as closely as the book allows • Check that you correctly convert KG and apply it to the KN data (e.g., GZ = KN − KG·sinθ, or as directed by the book) for each angle you inspect • Confirm on the graph or table the exact angle where the righting arm becomes zero or crosses through zero according to the definition used in the blue pages for "loss of positive stability"