Question 4669Deck General70% to pass
A virtual rise in the center of gravity of a MODU may be caused by _______________.
AI Explanation
The correct answer is A) using fuel from a pressed fuel tank.
When fuel is drawn from a pressed fuel tank, the center of gravity of the mobile offshore drilling unit (MODU) will rise. This is because the fuel in a pressed tank is stored at a higher level compared to an unpressed tank, and as the fuel is consumed, the center of gravity of the MODU will shift upwards, resulting in a virtual rise in the center of gravity.
The other options are incorrect because:
B) Emptying a partially filled tank would cause the center of gravity to lower, not rise.
C) Transferring pipe from the setback area to the pipe rack would not affect the center of gravity of the MODU.
D) Filling a partially filled tank would cause the center of gravity to lower, not rise.
Related Questions
#4667 The central longitudinal structural hull strength member of the lower hulls of semisubmersible MODU's is called the _______________.#4668 The DEEP DRILLER, at a draft of 60 feet, has -3,600 ft-tons of transverse moments. How much ballast should be transferred between tanks 10P and 10S to level the unit in list? #4670 In the DEEP DRILLER, the longitudinal free surface correction (FSCL) is obtained from the total of the longitudinal free surface moments (FSML) by _______________.#4671 The DEEP DRILLER, while loaded as shown in the Sample Load Form #4 (Drilling), suffers damage to the port aft column below the waterline. Pumping from tank 8P and 9P is not sufficient to prevent increasing port list and stern down trim. You should consider counterflooding in tank _______________.#4672 On a MODU, the keel is the primary strength member of the lower hull form in which direction?