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 bow leg reaction?
Official USCG Answer & Rule Citation
Correct Answer: Option A — 7,026 kips
Rig move and preload calculations using three-point reaction formulas balance longitudinal and transverse moments against the 7,191.7 kips preload, resulting in a bow leg reaction force of 7,026 kips.
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