Question 4429 Deck General

The correct answer is B) critical motion limits have not been exceeded. The DEEP DRILLER is a type of mobile offshore drilling unit (MODU) that is designed to maintain its operating draft instead of deballasting to survival draft when the critical motion limits have not been exceeded. This is in accordance with the regulations and guidelines for the operation of MODUs, which prioritize the stability and safety of the vessel over reducing its draft in extreme weather conditions. The other answer choices are incorrect because: A) the maximum wave height alone does not determine the need to deballast, B) is the correct answer, C) high winds alone do not necessitate deballasting, and D) the proximity of waves to the spider deck is not the sole factor in deciding whether to deballast.