a chart or map showing the features of a body of water, including depths and the nature of the sea floor.

the process of creating hydrographic charts.

जलविग्रहण मानचित्र बनाने की प्रक्रिया

English Usage: Hydrographic charting is essential for maritime safety.

Hindi Usage: जलविग्रहण मानचित्र बनाना समुद्री सुरक्षा के लिए आवश्यक है।