1. Fundamental Knowledge2. Instrumentation3. Sound Transmission and Reception4. Range-Average Measurement5. Forward Formulation6. Inversion on a Horizontal Slice7. Inversion on a Vertical Slice8. Data Assimilation9. Applications for Horizontal-Slice Inversion10. Applications for Vertical-Slice Inversion11. Applications for Data Assimilation12. Modal Function Expansion with Coastline Constraints13. Application to Various Fields and Phenomena14. Mirror-Type Coastal Acoustic Tomography