"Observation of sailors' diseases" is an outstanding work of the outstanding English doctor and scientist Sir Gilbert Blaine. In this book, the author examines specific diseases that often occur among sea travelers and develops methods for their prevention and treatment. Blaine describes in detail the symptoms, causes and consequences of the diseases to which maritime workers are exposed, making a significant contribution to the development of medicine. In his book, he draws attention to the importance of hygiene on the ship, and also emphasizes proper nutrition and a balanced lifestyle. "Observing Sailors' Diseases" is a must-read for physicians, historians, and anyone interested in the history of medicine and maritime expeditions.