Question 4462 Deck General

The correct answer is C) natural pitch period. Slacking the leeward mooring lines reduces the righting moment acting on the vessel, which in turn increases the natural pitch period. This is because the reduced righting moment allows the vessel to pitch more freely, leading to a longer natural pitch period. The other options are incorrect because: A) Metacentric height is not directly affected by slacking the mooring lines. B) The height of the righting arm is also not directly affected by slacking the mooring lines. D) The righting moment is actually reduced by slacking the mooring lines, not increased.