When a vessel is stationary and in a hogging...

Question 1 of 31048fy_heal_CREATE_q137_2027

When a vessel is stationary and in a hogging condition, the main deck is under which stress?

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Question 1 of 31048

Q

When a vessel is stationary and in a hogging condition, the main deck is under which stress?

🔍 Key Concepts

• Hogging condition: how the hull bends when the wave crest is near the middle of the ship • Difference between tension and compression along the deck and bottom structure when the ship is hogging • Understanding where the hull fibers are ‘stretched’ vs. ‘squeezed’ when the ship bends upward in the middle

💭 Think About

• When the ship is hogging, is the main deck bent outward (stretched) or inward (squeezed)? Visualize the ship as a beam resting on a wave at its center. • In beam bending, which side of the beam experiences tension and which side experiences compression when the middle sags versus when the middle rises? • Think about the bottom structure at midships during hogging: if the bottom is in one type of stress, what must the deck be in to balance the bending moment?

✅ Before You Answer

• Be clear on the definition of hogging versus sagging for ships • Recall basic beam theory: for an upward bending moment at midspan, where is tension and where is compression located? • Verify which part of the hull (deck or bottom) is in tension during hogging before selecting the answer