What is the change in vertical moments for the DEEP DRILLER if 103.48 long tons of ballast is discharged from a full ballast tank 1P?

Correct Answer: Option C — 1,914 foot-tons decrease

Discharging weight from a specific vertical position removes vertical moments equal to the weight multiplied by its VCG. Multiplying 103.48 long tons by the VCG of ballast tank 1P extracts 1,914 foot-tons of vertical moment from the MODU's total stability ledger, lowering overall center of gravity.