The COASTAL DRILLER, loaded as shown in the...

Question 1 of 2707066636ef128f7522a1c522642

The COASTAL DRILLER, loaded as shown in the Sample Load Form #2 (Preload), dumps the preload. However, 138.4 kips remained on board. The LM for the remaining preload is 17,992 ft-kips. What is the new LCG?

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Question 1 of 27070

🔍 Key Concepts

• Using LCG (Longitudinal Center of Gravity) formula: LCG = (sum of longitudinal moments) / (total weight) • Effect of removing a weight on the vessel’s total weight and total longitudinal moment • Distinguishing between the LCG of the remaining preload only vs. the overall vessel LCG

💭 Think About

• From the preload data on Sample Load Form #2, what were the original total weight and original total longitudinal moment before dumping? • When most of the preload is dumped, how do you compute the new total weight and new total longitudinal moment of the vessel plus remaining preload? • After you find the new total LM and total weight, what single formula links those directly to the new LCG, and are you applying it to the whole vessel or just the remaining preload?.

✅ Before You Answer

• Be sure you use consistent units (kips with ft-kips) when dividing LM by weight. • Confirm whether the 17,992 ft-kips is the moment of the remaining preload alone or is part of the overall LM of the vessel; treat it correctly in the moment-summing step. • After computing the new LCG, check that your answer is reasonable compared to the original LCG (it should shift toward where the remaining preload is located, not away from it).