Question 4464 Deck General

The correct answer is B) 42,255 ft-long tons. When clear ice is present while drilling, the vertical transverse moments of the DEEP DRILLER are increased by 42,255 ft-long tons. This is because the presence of clear ice adds significant weight and wind load to the drilling rig, which increases the overall moments and forces acting on the structure. The other answer choices are incorrect because they do not accurately reflect the specific increase in vertical transverse moments caused by the presence of clear ice on the DEEP DRILLER. The correct value of 42,255 ft-long tons is based on the engineering assessments and regulations governing the stability and safety of offshore drilling rigs in icy conditions.