National Hydrographic Offices

National Hydrographic Offices are government agencies responsible for mapping and surveying a country’s waterways, seas, and coastlines. They produce detailed nautical charts and nautical data essential for safe navigation, maritime operations, and ocean management. These offices gather information through surveys, remote sensing, and underwater measurements, ensuring that mariners, shipping companies, and maritime authorities have accurate and up-to-date navigational charts. Their work supports maritime safety, environmental protection, and national security, and they often collaborate internationally to maintain consistent and reliable hydrographic data across regions.