Following cargo loading operations, your...

Question 1 / 205eccef9fbacbc34ba4d46a12

Question 1 of 205eccef9fbacbc34ba4d46a12

Following cargo loading operations, your vessel is experiencing an excessive at-sea hogging bending stress as shown in the illustration. What should you do to reduce the bending moment? Illustration SF-0047

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🔍 Key Concepts

• Review the difference between hogging and sagging bending moments and how the hull is curved in each case. • Think about how adding or removing weight at different longitudinal positions (ends vs amidships) changes the bending moment curve. • Relate the blue arrows in the illustration to weight (downward) and buoyancy (upward) forces along the ship’s length.

💭 Think About

• In a hogging condition, is the middle of the ship higher or lower than the bow and stern? Visualize how the hull is bent. • If the ship is already hogging, would putting more weight at the ends increase or decrease that upward bend in the middle? What about putting more weight in the middle? • Which ballast action would tend to counteract the bending shape you see in the illustration, rather than exaggerate it?

✅ Before You Answer

• Be clear on which part of the ship (ends or amidships) is under greater upward force in a hogging condition. • Decide whether you want to increase weight amidships or increase weight at the ends to straighten a hogging hull. • Check that your chosen option would reduce the existing bending (make the hull closer to straight), not simply shift the problem elsewhere.

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Question 1 of 20

Add ballast to an amidships tank.

Add ballast to the forepeak tank.

Add ballast to the aftpeak tank.

Remove ballast from an amidships tank.

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Question 1 / 205eccef9fbacbc34ba4d46a12

Question 1 of 205eccef9fbacbc34ba4d46a12

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Question 1 of 20

5eccef9fbacbc34ba4d46a12

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🔍 Key Concepts

💭 Think About

✅ Before You Answer

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