This textbook on fluid mechanics builds on the mathematical and physical fundamentals of the students and is suitable as a textbook for intermediate semesters. It specifically illustrates the connection between modern fluid mechanics and technical mechanics, incorporating modern measurement and numerical calculation methods. Each chapter provides material for a one-week lecture, and additionally, the book is suitable for in-depth self-study alongside lectures. The content of each chapter is structured in such a way that it guides the student towards the specialized literature of the subject area covered.