Question 4667Deck General70% to pass
The central longitudinal structural hull strength member of the lower hulls of semisubmersible MODU's is called the _______________.
AI Explanation
The correct answer is B) keel.
The keel is the central longitudinal structural hull strength member of the lower hulls of semisubmersible mobile offshore drilling units (MODUs). The keel provides the primary structural support and strength for the lower hull, transferring loads from the deck and upper hull down into the lower hull structure. This is in accordance with the design requirements and regulations for semisubmersible MODU construction and stability.
The other answer options are incorrect because: A) a rider plate is a secondary longitudinal structural member, C) a stress plate is a component of the deck or hull plating, and D) the main beam is a primary transverse structural member, not a longitudinal one.
Related Questions
#4665 For a MODU with trim, an increase in GMT will cause the inclination to _______________.#4666 Horizontal subdivision decks forming watertight compartments in the columns of a semisubmersible MODU increase the unit's _______________.#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? #4669 A virtual rise in the center of gravity of a MODU may be caused by _______________.#4670 In the DEEP DRILLER, the longitudinal free surface correction (FSCL) is obtained from the total of the longitudinal free surface moments (FSML) by _______________.