The DEEP DRILLER is observed to be level at...

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Question 1 of 2066636ee728f7522a1c517918

The DEEP DRILLER is observed to be level at a draft of 60.0 feet. At the same time, the calculated load form shows the displacement to be 17,845 long tons, total longitudinal moments 51,466 foot-tons, and total transverse moments -10,000 foot-tons. What is the longitudinal location of the missing load?

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Question 1 of 20

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🔍 Key Concepts

• Center of gravity and moments: How a missing load affects total longitudinal moments and the vessel’s trim. • Moment = Weight × Distance: How to rearrange this basic formula to solve for an unknown distance when you know the change in moment and the weight. • Sign convention (forward vs. aft): How positive and negative distances are defined on the DEEP DRILLER’s loading calculations.

💭 Think About

• If the actual displacement is correct but the calculated total longitudinal moment is off, what does that tell you about where the missing weight must be located relative to the reference point? • How can you express the effect of the missing load as a ‘correction moment’ that, when added, would make the calculated moments match the observed condition? • Once you find the distance of the missing load, how does the sign (plus or minus) relate to ‘forward’ or ‘aft’ in the problem’s sign convention?

✅ Before You Answer

• Be sure you are using long tons (not short tons) consistently with the moments given in foot-tons. • Confirm which direction (forward or aft) is considered positive in the loading manual or typical offshore unit convention. • Double-check that you divided the moment difference by the missing load, not by the total displacement, when solving for the location.

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