While preloading, the COASTAL DRILLER has a total weight of 21,401 kips. The LM are 2,560,416 ft-kips, and the TM are 6,206 ft-kips. What is the bow leg reaction?

Correct Answer: Option A — 7,099 kips

Applying static equilibrium equations for mobile offshore drilling units, the bow leg reaction is determined by subtracting the longitudinal moments divided by the leg spacing from the total preload weight, yielding 7,099 kips for the COASTAL DRILLER.