NGA Explains: What is Hydrography? (Episode 4)
Uploader: National Geospatial-Intelligence Agency
Original upload date: Wed, 07 Nov 2018 00:00:00 GMT
Archive date: Mon, 29 Nov 2021 10:37:46 GMT
With less than five percent of the Earth’s oceans explored, we rely on the study of hydrography to help ensure safety of navigation. Don’t know what hydrography is or does? No worries, in this episodeShow more
of ‘NGA Explains’ one of our experts explains what it is, what it is used for, and how NGA helps ensure maritime safety.