You have 8 containers of steward's supplies...

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Question 1 of 2066636eec28f7522a1c51bf0a

You have 8 containers of steward's supplies each measuring 6'L by 6'B by 6'H and weighing 1.5 tons each. Each container is stowed on deck. What is the maximum VCG permitted of the remaining cargo if you are carrying rig water and load to maximum capacity? See illustration D037DG below.

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Question 1 of 20

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🔍 Key Concepts

• Use the stability letter (Illustration D037DG) to find the maximum allowable deck cargo weight when carrying rig water to maximum capacity. • Remember that the letter limits the vertical center of gravity (VCG) of all deck cargo combined to a certain distance above the main deck. • Use a moment balance: total moment = (weight × VCG) for each part, divided by total weight gives the combined VCG.

💭 Think About

• What is the total weight of the eight steward’s containers on deck, and what is the height of their individual centers of gravity above the main deck? • According to D037DG, when rig water is carried to maximum capacity, what is the maximum total deck cargo weight allowed? How much additional deck cargo weight (the “remaining cargo”) can you still load? • If the combined VCG of all deck cargo must equal the limit in the letter, how can you set up an equation using (weight × VCG) for the containers and for the remaining cargo to solve for the maximum VCG of the remaining cargo?

✅ Before You Answer

• Confirm from D037DG the maximum deck cargo weight permitted when rig water is at maximum capacity. • Confirm from D037DG the maximum height of the center of gravity of deck cargo above the main deck (this is the limiting combined VCG). • Make sure to divide the sum of moments by the total deck cargo weight (containers + remaining cargo) when solving for the combined VCG.

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