This volume examines the interaction between ocean waves and oscillating systems. With a focus on linear analysis of low-amplitude waves, the text is designed to convey a thorough understanding of wave interactions. Topics include the background mathematics of oscillations, gravity waves on water, the dynamics of wave-body interactions, and the absorption of wave energy by oscillating bodies. While the focus is on linear theory, the practical application of energy storage and transport is interwoven throughout. Each chapter ends with problems. A solutions manual is available for instructors.