Deck General USCG Question #4371 (Set 140)

What is the shift in the longitudinal center of gravity if 200 short tons are discharged from 30 feet forward of amidships on a MODU with LCG 1.5 feet forward of amidships, and displacement 9,000 short tons?

Official USCG Answer & Rule Citation

Correct Answer: Option B — 0.65 foot aft

Longitudinal shift is calculated by multiplying the weight removed by the distance from the initial LCG, then dividing by the final displacement. Discharging 200 tons at 30 ft forward from a 9,000-ton vessel yields a 0.65 ft shift aft toward the removed weight per standard stability principles.

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