The COASTAL DRILLER, when underway was loaded as shown in Sample Load Form #1 (Rig Move). It is now preloaded at minimum air gap waiting for all settling to take place. The preload, weighing 7,191.7 kips, has LM 870,196 ft-kips and TM 2,158 ft-kips. What is the port leg reaction?

Correct Answer: Option C — 7,144 kips

Preload conditions require precise application of longitudinal and transverse moment formulas from the vessel's stability operations manual. Using the specified preload weight of 7,191.7 kips along with longitudinal and transverse moments yields a computed port leg reaction of 7,144 kips.