For the COASTAL DRILLER, what is the maximum rotary load that can be used when the rotary has been extended 40 feet aft of the transom?

Correct Answer: Option C — 609 kips

The Coastal Driller's stability and structural limitations are defined in its operating manual. When the rotary load is extended 40 feet aft of the transom, the cantilevered moment significantly reduces the allowable load capacity to maintain structural integrity and stability, resulting in a maximum limit of 609 kips.