Steering of a ship: Choose the correct definition of the motion. Marine dynamics terminology: Identify what is meant by ‘‘steering’’ in ship motions (pitch, yaw/turn, roll). Select the correct description.

Difficulty: Easy

• Up–down motion in a vertical plane (pitching) about the transverse axis
• Turning the ship on a curved path to right or left while moving ahead (yaw/turning)
• Sideways rocking motion (rolling) about the longitudinal axis
• Heave (pure vertical translation) without turning