Question 4397Deck General70% to pass
The DEEP DRILLER may remain at operating draft instead of deballasting to survival draft when _______________.
AI Explanation
The correct answer is D) winds are less than 70 knots.
The reason this is the correct answer is that the DEEP DRILLER is a type of mobile offshore drilling unit (MODU), and under the regulations governing MODUs, the operating draft may be maintained instead of deballasting to survival draft when the wind speed is less than 70 knots. This is because in winds less than 70 knots, the MODU is not considered to be in a severe storm condition that would require it to be in the more stable, lower-draft survival configuration.
The other answer choices are incorrect because they do not align with the specific regulations governing MODU operations. Exceeding critical motion limits, waves approaching the spider deck, or wave heights greater than 64 feet do not, on their own, trigger the requirement to deballast to survival draft if the wind speed is below 70 knots.
Related Questions
#4395 The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). Additional deck load may be placed aboard. If the maximum permissible deck load were placed in the pipe racks at a VCG of 130 feet, the KG increases _______________.#4396 The COASTAL DRILLER, while drilling, has a total weight of 15,400 kips. The LCG is 120.00 feet AF0, and the TCG is -0.5 feet to port of the centerline. What is the bow leg reaction? #4398 Adding the transverse free surface correction to the uncorrected height of the center of gravity of a MODU yields _______________.#4399 The DEEP DRILLER as currently configured is limited to a maximum drilling depth of _______________.#4400 The DEEP DRILLER is drilling at 60 feet draft at a corrected KG of 54.0 feet. Ballast added or discharged to remain at a constant draft is at a VCG of 10 feet. How much non-liquid load would have to be removed from an average height of 130 feet above the keel to meet the maximum allowable KG at a draft of 60 feet for winds greater than 70 knots?