Question 3252 Deck General

The correct answer is C) flex or ball joint. The flex or ball joint allows a floating MODU (Mobile Offshore Drilling Unit) to sway without bending the marine riser system. This joint provides the necessary flexibility to accommodate the movement of the MODU relative to the seafloor, preventing excessive stress on the riser system. The other options are incorrect because: - A) yaw joint refers to the rotation of the MODU around a vertical axis, not the flexibility of the riser system. - B) slip joint is a different type of joint used in the riser system, but does not provide the same sway function as the flex or ball joint. - D) sway joint is not a commonly used term in this context.