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

Study

Question 1 of 2066636eec28f7522a1c51d032

Use the material in Section 1, the blue pages, of the Stability Data Reference Book. If the KG is 23.0 feet, and the drafts are: FWD 15'-03", AFT 15'-09"; at what angle will the vessel lose positive stability?

Back

Question 1 of 20

66636eec28f7522a1c51d032

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Cross curves of stability (KN curves) and how to adjust them for a given KG using the formula: GM = KM - KG • How to determine the angle of vanishing stability (where GZ becomes zero) from the GZ curve • Effect of trim (different forward and aft drafts) on which displacement/curves you should use

💭 Think About

• From the drafts given, what displacement (or mean draft) should you enter with in the cross curves table? • Once you have the KN values and a known KG, how do you construct or read the GZ curve to find the angle where GZ returns to zero? • How does an increased KG (higher center of gravity) change the range of positive stability on the GZ curve?

✅ Before You Answer

• Make sure you are using the correct displacement/mean draft line from the blue pages for the given drafts • Confirm you apply the correct correction for KG when going from KN to GZ (remember GZ = KN · sinθ − KG·sinθ or equivalent form as given in the book) • Verify the angle you select is where the righting arm (GZ) just becomes zero again after the initial positive range, not just any angle on the curve

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed