1. Introduction2. Cartesian Tensor and Matrix Calculus3. Fundamentals of Continuum Mechanics4. Variational Principles of Linear FSI Systems5. Solutions of Some Linear FSI Problems6. Preliminaries of Waves7. Finite Element Models for Linear FSI Problems8. Mixed FE-BE Model for Linear Water-structure Interactions9. Hydroelasticity Theory of Ship-water Interactions10. Variational principles for nonlinear fluid-solid interactions11. Mixed FE - CFD Method for Nonlinear Fluid-solid Interactions12. Mixed Finite Element - Smoothed Particle Methods for Nonlinear Fluid-solid Interactions Appendices