The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). What is the new trim angle if 500 kips of weight are shifted aft 60 feet?
Official USCG Answer & Rule Citation
Correct Answer: Option D — 0.61 degrees by the stern
Shifting weight longitudinally creates a trim moment calculated by weight times distance. Dividing this moment by longitudinal stability factors yields the new trim angle of 0.61 degrees by the stern.
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