The rotary of the COASTAL DRILLER is located 38 feet aft of transom and 6 feet to starboard of the centerline. With the changes to lightweight shown in the Operating Manual, the maximum allowable hook load is __________.

Correct Answer: Option C — 424 kips

Operating manuals establish maximum allowable hook loads based on combined static and dynamic overturning moments. With the rotary positioned 38 feet aft and 6 feet starboard, structural and stability limitations restrict the maximum permitted hook load to 424 kips.