Which rotational movement is about the vertical axis, twisting around it?

Which rotational movement is about the vertical axis, twisting around it?

• A. Pitch
• B. Roll
• C. Yaw
• D. List

Answer: (C)

Yaw is the rotation about the vertical axis, twisting left or right around an up-down line. This changes the vessel’s heading without lifting or lowering the bow or tilting the hull. In other words, the nose points more toward port or starboard, while the rest stays roughly level. Pitch rotates about the transverse (side-to-side) axis, so it tilts the bow up or down. Roll rotates about the longitudinal (front-to-back) axis, tilting the vessel side to side. List isn’t a rotation around an axis at all; it’s a tilt caused by weight distribution or stability effects.

Yaw is the rotation about the vertical axis, twisting left or right around an up-down line. This changes the vessel’s heading without lifting or lowering the bow or tilting the hull. In other words, the nose points more toward port or starboard, while the rest stays roughly level.

Pitch rotates about the transverse (side-to-side) axis, so it tilts the bow up or down. Roll rotates about the longitudinal (front-to-back) axis, tilting the vessel side to side. List isn’t a rotation around an axis at all; it’s a tilt caused by weight distribution or stability effects.