Question 1738 Deck Safety

The correct answer is A) Longitudinal. Rolling is the angular motion of a vessel about its longitudinal axis, which is the imaginary line running from the bow to the stern of the ship. This motion causes the vessel to tilt or lean from side to side. The longitudinal axis is one of the three primary axes of a vessel, with the other two being the transverse (side-to-side) and vertical axes. The other answer choices are incorrect because they do not represent the axis about which rolling motion occurs. Centerline and transverse refer to different axes, while vertical is not the axis of rolling motion.