Charting The Deep: A History Of The Indian Naval Hydrographic Department" by Manoshi Bhattacharya (Himalayan Books, New Delhi, 2004) "Charting the Deep" is a captivating journey through the history of the Indian Naval Hydrographic Department (INHD), a vital institution dedicated to ensuring safe navigation and maritime safety. This comprehensive volume delves into the fascinating evolution of the INHD, from its humble beginnings to its current position as a leading authority in the field. Readers will discover the crucial role the INHD has played in supporting India's maritime interests throughout its history. The book explores the development of nautical charting and surveying techniques, highlighting the advancements in technology and the dedication of the skilled personnel who have contributed to the INHD's success. "Charting the Deep" offers a unique perspective on India's maritime heritage, showcasing the contributions of the INHD to national security, economic growth, and scie