Ship Motions Explained

This course provides a clear and practical introduction to the six fundamental motions experienced by ships at sea. Every vessel is constantly subjected to environmental forces such as waves, wind, and currents, which cause movement along and around the ship's principal axes.

You will learn about the three principal axes used to describe vessel movement, the longitudinal (X), transverse (Y), and vertical (Z) axes, and how all ship motions relate to these reference points. The course explains the three rotational motions, roll, pitch, and yaw, as well as the three linear motions, surge, sway, and heave.

Through detailed explanations and practical examples, you'll discover what causes each motion, how they are measured, and how they influence ship handling, navigation, passenger comfort, and overall vessel safety. The course also examines how environmental conditions and ship design affect vessel behavior in dynamic marine environments.

By the end of this course, you'll have a solid understanding of ship motion terminology and the fundamental principles that govern vessel movement at sea.