Deck General USCG Q#4379 (Set 140)

What is the longitudinal shift in the center of gravity if 200 short tons is moved ten feet to port and 30 feet forward on a MODU with a displacement of 8,960 long tons?

Official USCG Answer & Rule Citation

Correct Answer: Option C — 0.67 foot

Center of gravity shift is calculated independently for each axis using the formula: Shift = (Weight × Distance) / Displacement. For the longitudinal axis, moving 200 short tons (178.6 long tons equivalent) 30 feet forward on an 8,960 long-ton MODU produces a 0.67 foot forward shift.

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